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 A166139 Triangle T(n,k) read by rows. A080305(A126988(n,k)) if k|n, 0 otherwise. 1
 1, 2, 1, 3, 0, 1, 1, 2, 0, 1, 5, 0, 0, 0, 1, 1, 3, 2, 0, 0, 1, 7, 0, 0, 0, 0, 0, 1, 1, 1, 0, 2, 0, 0, 0, 1, 1, 0, 3, 0, 0, 0, 0, 0, 1, 1, 5, 0, 0, 2, 0, 0, 0, 0, 1, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 3, 0, 2, 0, 0, 0, 0, 0, 1, 13, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS EXAMPLE Table begins: 1 2,1 3,0,1 1,2,0,1 5,0,0,0,1 1,3,2,0,0,1 7,0,0,0,0,0,1 1,1,0,2,0,0,0,1 1,0,3,0,0,0,0,0,1 1,5,0,0,2,0,0,0,0,1 11,0,0,0,0,0,0,0,0,0,1 1,1,1,3,0,2,0,0,0,0,0,1 13,0,0,0,0,0,0,0,0,0,0,0,1 CROSSREFS Cf. A080305, row products A166140. Sequence in context: A143255 A127139 A309103 * A317367 A071431 A277322 Adjacent sequences:  A166136 A166137 A166138 * A166140 A166141 A166142 KEYWORD nonn,tabl AUTHOR Mats Granvik, Oct 08 2009 STATUS approved

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Last modified May 15 12:37 EDT 2021. Contains 343920 sequences. (Running on oeis4.)