The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A272165 a(n) = Product_{k=0..n} (k*n-k)^k. 1
 0, 4, 6912, 1632586752, 92771293593600000, 1922167968750000000000000000, 20386493620375898676722605059420979200000, 147691962494584259939724821292542617401603191419699200000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Table of n, a(n) for n=1..8. FORMULA a(n) ~ A * n^(n^2 + n + 1/12) / exp((n^2 + 2*n + 3)/4), where A = A074962 is the Glaisher-Kinkelin constant. MATHEMATICA Table[Product[(k*n-k)^k, {k, 1, n}], {n, 1, 10}] CROSSREFS Cf. A272166. Sequence in context: A137045 A368807 A077258 * A304994 A058440 A058464 Adjacent sequences: A272162 A272163 A272164 * A272166 A272167 A272168 KEYWORD nonn,easy AUTHOR Vaclav Kotesovec, Apr 21 2016 STATUS approved

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

Last modified April 16 03:59 EDT 2024. Contains 371696 sequences. (Running on oeis4.)