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A203526 v(n)/A000178(n); v=A203524 and A000178=(superfactorials). 3
1, 8, 480, 322560, 1857945600, 137339338752000, 90498933234597888000, 806410654352196092559360000, 151104996166246050391298219704320000, 278316545034703677313682486677538340864000000 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
It is conjectured that every term of A203526 is an integer.
LINKS
MATHEMATICA
f[j_] := Prime[j + 1]; z = 17;
v[n_] := Product[Product[f[k] + f[j], {j, 1, k - 1}], {k, 2, n}]
d[n_] := Product[(i - 1)!, {i, 1, n}] (* A000178 *)
Table[v[n], {n, 1, z}] (* A203524 *)
Table[v[n + 1]/(8 v[n]), {n, 1, z - 1}] (* A203525 *)
Table[v[n]/d[n], {n, 1, 20}] (* A203526 *)
CROSSREFS
Sequence in context: A015006 A279383 A054326 * A210117 A204564 A152495
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jan 03 2012
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)