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A203590 v(n+1)/v(n), where v=A203589. 2
10, 884, 214600, 101696400, 79516330400, 92782304200000, 151115361757776000, 327547876406050976000, 911669878205463707200000, 3169019350028190185654400000, 13454908637914924371884576000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

See A093883 for a discussion and guide to related sequences.

LINKS

Table of n, a(n) for n=1..11.

MATHEMATICA

f[j_] := 2 j - 1; z = 12;

v[n_] := Product[Product[f[j]^2 + f[k]^2, {j, 1, k - 1}], {k, 2, n}]

Table[v[n], {n, 1, z}]          (* A203589 *)

Table[v[n + 1]/v[n], {n, 1, z}] (* A203590 *)

CROSSREFS

Sequence in context: A015033 A126677 A054328 * A263056 A233125 A297471

Adjacent sequences:  A203587 A203588 A203589 * A203591 A203592 A203593

KEYWORD

nonn

AUTHOR

Clark Kimberling, Jan 04 2012

STATUS

approved

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Last modified December 14 12:04 EST 2019. Contains 329979 sequences. (Running on oeis4.)