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A022466 Number of 1's in n-th term of A007651. 1
1, 2, 1, 3, 4, 3, 4, 6, 8, 12, 13, 18, 24, 33, 39, 52, 67, 88, 113, 155, 211, 264, 331, 455, 596, 762, 1000, 1288, 1688, 2222, 2884, 3754, 4915, 6364, 8300, 10845, 14138, 18372, 23966, 31254, 40821, 53113, 69336, 90273, 117678, 153518, 199990, 260671, 340007 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Peter J. C. Moses, Table of n, a(n) for n = 1..1000

MATHEMATICA

p={10, -3, 15, -13, 26, -10, -18, -33, 21, -3, 9, -22, 40, 8, 12, -52, -19, 73, 38, 5, 14, -25, -35, -20, -25, 53, 29, 4, -91, -43, 42, 18, 36, -5, -99, 10, 7, 55, 44, -44, -53, -5, 15, 47, -19, -23, 13, 21, 18, -55, -39, 15, 35, 36, -7, -23, -9, -3, 3, 2, 1, 2, 6, 6, -2, -9, -5, 2, 7, 3, -1, -1, -2, -2, -1, 0, 2, 1}; q={-6, 3, -6, 12, -4, 7, -7, 1, 0, 5, -2, -4, -12, 2, 7, 12, -7, -10, -4, 3, 9, -7, 0, -8, 14, -3, 9, 2, -3, -10, -2, -6, 1, 10, -3, 1, 7, -7, 7, -12, -5, 8, 6, 10, -8, -8, -7, -3, 9, 1, 6, 6, -2, -3, -10, -2, 3, 5, 2, -1, -1, -1, -1, -1, 1, 2, 2, -1, -2, -1, 0, 1}; gf=Fold[x #1+#2&, 0, p]/Fold[x #1+#2&, 0, q]; CoefficientList[Series[gf, {x, 0, 99}], x] (* Peter J. C. Moses, Jun 24 2013 *)

CROSSREFS

Sequence in context: A122530 A301453 A278340 * A144254 A133310 A077608

Adjacent sequences:  A022463 A022464 A022465 * A022467 A022468 A022469

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified November 14 23:06 EST 2018. Contains 317221 sequences. (Running on oeis4.)