Hofstadter Figure-Figure sequences: Difference between revisions
Hofstadter Figure-Figure sequences (view source)
Revision as of 11:48, 24 October 2011
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=={{header|J}}==
<lang j>R=:_1 1 3
S=:0 2 4
FF=:3 :0
while.+./y>:R,&#S do.
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