Riordan numbers: Difference between revisions
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Thundergnat (talk | contribs) m (correct some misinformation) |
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The one thousandth: 51077756867821111314..79942013897484633052 (472 digits) |
The one thousandth: 51077756867821111314..79942013897484633052 (472 digits) |
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The ten thousandth: 19927418577260688844..71395322020211157137 (4765 digits)</pre> |
The ten thousandth: 19927418577260688844..71395322020211157137 (4765 digits)</pre> |
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=={{header|Wren}}== |
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{{libheader|Wren-gmp}} |
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{{libheader|Wren-fmt}} |
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<lang ecmascript>import "./gmp" for Mpz |
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import "./fmt" for Fmt |
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var limit = 10000 |
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var a = List.filled(limit, null) |
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a[0] = Mpz.one |
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a[1] = Mpz.zero |
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for (n in 2...limit) { |
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a[n] = (a[n-1] * 2 + a[n-2] * 3) * (n-1) / (n+1) |
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} |
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System.print("First 32 Riordan numbers:") |
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Fmt.tprint("$,17i", a[0..31], 4) |
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System.print() |
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for (i in [1e3, 1e4]) { |
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Fmt.print("$,8r: $20a ($,d digits)", i, a[i-1], a[i-1].toString.count) |
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}</lang> |
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{{out}} |
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<pre> |
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First 32 Riordan numbers: |
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1 0 1 1 |
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3 6 15 36 |
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91 232 603 1,585 |
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4,213 11,298 30,537 83,097 |
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227,475 625,992 1,730,787 4,805,595 |
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13,393,689 37,458,330 105,089,229 295,673,994 |
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834,086,421 2,358,641,376 6,684,761,125 18,985,057,351 |
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54,022,715,451 154,000,562,758 439,742,222,071 1,257,643,249,140 |
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1,000th: 51077756867821111314...79942013897484633052 (472 digits) |
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10,000th: 19927418577260688844...71395322020211157137 (4,765 digits) |
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</pre> |
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