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A131678 a(n) = (Product_{i=1..8} n^i+i) / 8!. 1
1, 9, 9065925, 7310502643675, 176327300873583405, 483041091658815453456, 320648364425775841520065, 79074323113562613259765875, 9403175220694650942397475625, 639220975955961365494757841040, 27923612862792073359883606310061, 852385355738368243011331354210716, 19346552845649626158477975728463925 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

See A131685 about well-definedness. - M. F. Hasler, May 02 2015

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..1000

MATHEMATICA

Table[Product[ n^i + i, {i, 1, 8}]/8!, {n, 0, 12}] (* Michael De Vlieger, Jan 03 2016 *)

PROG

(PARI) A131678(n, k=8)=prod(i=1, k, (n^i+i))/k! \\ Changing the optional 2nd argument allows one to produce A000027 (k=1), A064808 (k=2), A131509 (k=3), A129995(k=4), A131675 (k=5), ..., A131680 (k=10). - M. F. Hasler, May 02 2015

CROSSREFS

Sequence in context: A273234 A259159 A340181 * A229687 A029983 A225775

Adjacent sequences:  A131675 A131676 A131677 * A131679 A131680 A131681

KEYWORD

nonn

AUTHOR

Alexander R. Povolotsky, Sep 15 2007

EXTENSIONS

Definition made explicit by M. F. Hasler, May 02 2015

STATUS

approved

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Last modified September 28 20:57 EDT 2021. Contains 347717 sequences. (Running on oeis4.)