A203708 v(n+1)/v(n), where v=A203707.

13, 986, 227476, 403325000, 377678555920, 1740121478145440, 3548967435637000000, 30329075863614521552000, 1000883333324929677220000000, 5056913952254846124761000000000, 240257191158612376782675694149760000

Offset: 1

Author

Clark Kimberling, Jan 05 2012

Keywords

• nonn

Comments

See A093883 for a discussion and guide to related sequences.

Programs

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 *)