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A129458 Row sums of triangle A129065 (v=1 member of a family). 3
1, 1, 3, 23, 329, 7545, 253195, 11692735, 710944785, 55043460305, 5286546264275, 616743770648775, 85901526469924825, 14079397690024018825, 2682416268746051840475, 587823624532842773747375, 146813897212611204795118625, 41456888496977804292047054625 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

See A129065 for the M. Bruschi et al. reference.

LINKS

Vaclav Kotesovec, Table of n, a(n) for n = 0..250

FORMULA

a(n) = Sum_{m=0..n} A129065(n,m).

From Vaclav Kotesovec, Aug 24 2016: (Start)

a(n) = (2*n^2 - 4*n + 3)*a(n-1) - (n-2)^2*(n-1)^2*a(n-2).

a(n) ~ c * n^(2*n+(sqrt(5)-1)/2) / exp(2*n), where c = 6.07482758856838398336112197806575192722726...

(End)

CROSSREFS

Sequence in context: A227821 A222076 A338301 * A118184 A027486 A092664

Adjacent sequences:  A129455 A129456 A129457 * A129459 A129460 A129461

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang, May 04 2007

STATUS

approved

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Last modified August 6 00:46 EDT 2021. Contains 346493 sequences. (Running on oeis4.)