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A090361 Satisfies A^2 = BINOMIAL(A090358^3), where A090358^6 = BINOMIAL(A090358^5). 2
1, 2, 12, 130, 2075, 44196, 1183492, 38254712, 1449394470, 62974889140, 3085705347128, 168283580164356, 10107641429213386, 662869582493716400, 47124829795282593000, 3609674673146922124600, 296355186635275737517175 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

See comments in A090358.

LINKS

Vaclav Kotesovec, Table of n, a(n) for n = 0..320

FORMULA

a(n) ~ (n-1)! / (50/3 * (log(6/5))^(n+1)). - Vaclav Kotesovec, Nov 19 2014

PROG

(PARI) {a(n)=local(A); if(n<1, 0, A=1+x+x*O(x^n); for(k=1, n, B=subst(A^5, x, x/(1-x))/(1-x)+x*O(x^n); A=A-A^6+B); B=subst(A^3, x, x/(1-x))/(1-x)+x*O(x^n); polcoeff(B^(1/2), n, x))}

CROSSREFS

Cf. A090358.

Sequence in context: A303926 A214759 A185751 * A258467 A286422 A073551

Adjacent sequences:  A090358 A090359 A090360 * A090362 A090363 A090364

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Nov 26 2003

STATUS

approved

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Last modified May 6 09:45 EDT 2021. Contains 343580 sequences. (Running on oeis4.)