This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A131677 #18 Feb 22 2017 02:23:25
%S A131677 1,8,274725,8903032600,21521701559085,9892478959203456,
%T A131677 1527238784041075105,109733832449349303000,4483781212288588835625,
%U A131677 118795734924428077310080,2233888850312257843810061,31811523551546985038211552,359951182400070234774044725
%N A131677 a(n) = (Product_{i=1..7} n^i+i) / 7!.
%C A131677 See A131685 about well-definedness. - _M. F. Hasler_, May 02 2015
%H A131677 G. C. Greubel, <a href="/A131677/b131677.txt">Table of n, a(n) for n = 0..1000</a>
%t A131677 Table[Product[ n^i + i, {i, 1, 7}]/7!, {n, 0, 12}] (* _Michael De Vlieger_, Jan 03 2016 *)
%o A131677 (PARI) A131677(n,k=7)=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
%K A131677 nonn,easy
%O A131677 0,2
%A A131677 _Alexander R. Povolotsky_, Sep 15 2007
%E A131677 Definition made explicit by _M. F. Hasler_, May 02 2015