Minimum multiple of m where digital sum equals m: Difference between revisions

=={{header|Ruby}}==

<syntaxhighlight lang="ruby">a131382 = (0..).lazy.map{|n| (1..).detect{|m|(n*m).digits.sum == n} }

a131382.take(70).each_slice(10){|slice| puts "%8d"*slice.size % slice }</syntaxhighlight>

{{out}}

<pre> 1 1 1 1 1 1 1 1 1 1

19 19 4 19 19 13 28 28 11 46

199 19 109 73 37 199 73 37 271 172

1333 289 559 1303 847 1657 833 1027 1576 1282

17497 4339 2119 2323 10909 11111 12826 14617 14581 16102

199999 17449 38269 56413 37037 1108909 142498 103507 154981 150661

1333333 163918 322579 315873 937342 1076923 1030303 880597 1469116 1157971

</pre>