The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A034976 One eighth of octo-factorial numbers. 5
 1, 16, 384, 12288, 491520, 23592960, 1321205760, 84557168640, 6088116142080, 487049291366400, 42860337640243200, 4114592413463347200, 427917611000188108800, 47926772432021068185600 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS FORMULA 8*a(n) = (8*n)!^8 := product(8*j, j=1..n) = 8^n*n!. E.g.f.: (-1+(1-8*x)^(-1))/8. G.f.: x/(1-16x/(1-8x/(1-24x/(1-16x/(1-32x/(1-24x/(1-40x/(1-32x/(1-... (continued fraction). - Philippe Deléham, Jan 07 2012 MATHEMATICA s=1; lst={s}; Do[s+=n*s; AppendTo[lst, s], {n, 15, 5!, 8}]; lst (* Vladimir Joseph Stephan Orlovsky, Nov 08 2008 *) CROSSREFS Cf. A045755, A034908-A034912, A034975, A051189. Sequence in context: A302805 A303466 A116166 * A114426 A189849 A051360 Adjacent sequences:  A034973 A034974 A034975 * A034977 A034978 A034979 KEYWORD easy,nonn AUTHOR STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 6 11:39 EST 2021. Contains 349563 sequences. (Running on oeis4.)