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A115087 Column 1 of triangle A115085. 5
1, 2, 5, 21, 102, 579, 3601, 24426, 176858, 1359906, 10996740, 93136545, 821734072, 7529402477, 71404315785, 699210393923, 7053151126260, 73158494370744, 778922147312076, 8500606925203992, 94961268583354364, 1084632255967292304 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..21.

CROSSREFS

Cf. A115085, A115086 (column 0), A115088 (column 2), A115089 (row sums); A115082.

Sequence in context: A047104 A319850 A270597 * A008981 A008982 A185134

Adjacent sequences:  A115084 A115085 A115086 * A115088 A115089 A115090

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Jan 13 2006

STATUS

approved

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Last modified July 5 21:00 EDT 2020. Contains 335473 sequences. (Running on oeis4.)