A203588 a(n) = v(n+1)/v(n), where v=A203587.

7, 399, 62049, 18796113, 9385475463, 6989994912159, 7264350232509825, 10045045412133360993, 17833797760578200512839, 39538255667229582221666799, 107060230015204789813170342753, 347683557620810765411565611000625

Offset

1,1

Comments

See A093883 for a discussion and guide to related sequences.

Links

Table of n, a(n) for n=1..12.

Mathematica

f[j_] := 2 j - 1; z = 12;
v[n_] := Product[Product[f[j]^2 - f[j] f[k] + f[k]^2,
{j, 1, k - 1}], {k, 2, n}]
Table[v[n], {n, 1, z}]          (* A203587 *)
Table[v[n + 1]/v[n], {n, 1, z}] (* A203588 *)

Crossrefs

Cf. A093883, A203587, A203588.

Sequence in context: A009712 A128793 A042527 * A015022 A225167 A160292

Adjacent sequences: A203585 A203586 A203587 * A203589 A203590 A203591

Keyword

nonn,easy

Author

Clark Kimberling, Jan 04 2012

Extensions

Definition corrected by Georg Fischer, Nov 26 2021

Status

approved