A203706 v(n+1)/v(n), where v=A203705.

7, 361, 56277, 84553833, 49208814333, 169562387740473, 208430698274481501, 1281126039821691353577, 35292441292705740030129333, 104535840312291670484725915119, 3928951393854870421503654084782523

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[j] f[k] + f[k]^2, {j, 1, k - 1}]
v[n_] := Product[u, {k, 2, n}]
Table[v[n], {n, 1, z}]          (* A203705 *)
Table[v[n + 1]/v[n], {n, 1, z}] (* A203706 *)

Crossrefs

Sequence in context: A067556 A082098 A057634 * A145181 A221353 A222870

Adjacent sequences: A203703 A203704 A203705 * A203707 A203708 A203709

Keyword

nonn

Author

Clark Kimberling, Jan 05 2012

Status

approved