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 A262011 a(n) = (1/n!) * Product_{k=1..n} (k^3 + 1). 1
 1, 2, 9, 84, 1365, 34398, 1244061, 61136712, 3920391657, 317987323290, 31830531061329, 3854387943062748, 555353062796290941, 93897387078942114486, 18410594823692578876005, 4143611208319076419026192, 1061023445030203505546894289, 306698188757554119191614031538, 99387251945711843180260258108953 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Logarithmic derivative equals A262003. LINKS FORMULA a(n) = (n+1) * Product_{k=1..n} (k^2 - k + 1). a(n) = (n+1) * A130032(n). MATHEMATICA Table[1/n! Product[k^3+1, {k, n}], {n, 0, 20}] (* Harvey P. Dale, Jul 19 2019 *) PROG (PARI) {a(n)=prod(k=1, n, (k^3+1))/n!} for(n=0, 30, print1(a(n), ", ")) CROSSREFS Cf. A130032, A262003. Sequence in context: A069234 A086929 A193466 * A120959 A125797 A068595 Adjacent sequences:  A262008 A262009 A262010 * A262012 A262013 A262014 KEYWORD nonn AUTHOR Paul D. Hanna, Sep 08 2015 STATUS approved

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Last modified June 12 08:13 EDT 2021. Contains 344943 sequences. (Running on oeis4.)