OFFSET
1,2
COMMENTS
a(n+1)/a(n) is an integer for n>=0, so (a(n)) is a divisibility sequence.
FORMULA
MATHEMATICA
s[n_] := 1; t[n_] := Prime[n];
u[n_] := Product[s[k] + t[n + 1 - k], {k, 1, n}]
(1/3) Table[u[n], {n, 1, 25}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Aug 05 2024
STATUS
approved