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A203476 v(n+1)/v(n), where v=A203475. 2
5, 130, 8500, 1051076, 211255200, 62840245000, 25959932960000, 14224928867370000, 9986120745657472000, 8740787543400204500000, 9333385482079885824000000, 11942338721669302523305000000, 18038821394494464638896640000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..13.

FORMULA

a(n) ~ 2^(n + 1/2) * exp(Pi*(n+1)/2 - 2*n) * n^(2*n). - Vaclav Kotesovec, Jan 25 2019

MATHEMATICA

f[j_] := j^2; z = 15;

v[n_] := Product[Product[f[k] + f[j],

{j, 1, k - 1}], {k, 2, n}]

Table[v[n], {n, 1, z}]              (* A203475 *)

Table[v[n + 1]/v[n], {n, 1, z - 1}] (* A203476 *)

CROSSREFS

Cf. A203475, A110468, A093883.

Sequence in context: A332317 A069078 A003732 * A203702 A142892 A229879

Adjacent sequences:  A203473 A203474 A203475 * A203477 A203478 A203479

KEYWORD

nonn

AUTHOR

Clark Kimberling, Jan 02 2012

STATUS

approved

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Last modified August 7 11:38 EDT 2022. Contains 355985 sequences. (Running on oeis4.)