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A203708 v(n+1)/v(n), where v=A203707. 2
13, 986, 227476, 403325000, 377678555920, 1740121478145440, 3548967435637000000, 30329075863614521552000, 1000883333324929677220000000, 5056913952254846124761000000000, 240257191158612376782675694149760000 (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_] := Prime[j]; z = 11;

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

v[n_] := Product[u, {k, 2, n}]

Table[v[n], {n, 1, z}]          (* A203707 *)

Table[v[n + 1]/v[n], {n, 1, z}] (* A203708 *)

CROSSREFS

Sequence in context: A274544 A267915 A096084 * A301870 A297739 A128685

Adjacent sequences:  A203705 A203706 A203707 * A203709 A203710 A203711

KEYWORD

nonn

AUTHOR

Clark Kimberling, Jan 05 2012

STATUS

approved

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Last modified August 4 08:25 EDT 2020. Contains 336201 sequences. (Running on oeis4.)