A203704 v(n+1)/v(n), where v=A203703.

19, 1911, 576937, 1189591767, 1496438765409, 8435413586003607, 23479548077360291553, 250967765143098771948999, 9627548485949418328668911673, 67370251155902517367181687865633, 3815405119576878725560291907907477303

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[j] f[k] + f[k]^2, {j, 1, k - 1}]
v[n_] := Product[u, {k, 2, n}]
Table[v[n], {n, 1, z}]          (* A203703 *)
Table[v[n + 1]/v[n], {n, 1, z}] (* A203704 *)