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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A020547 2nd Euler polynomial evaluated at x=n!. 2
 0, 0, 2, 30, 552, 14280, 517680, 25396560, 1625662080, 131681531520, 13168185811200, 1593350882323200, 229442532323558400, 38775788037405619200, 7600054456464819148800, 1710012252722891749632000, 437763136697374129754112000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Table of n, a(n) for n=0..16. FORMULA a(n) = n!*(n!-1). - Mark van Hoeij, May 13 2013 a(n) = A000142(n)*(A000142(n-1). - Michel Marcus, Apr 15 2015 MATHEMATICA Table[n! (n! - 1), {n, 0, 20}] (* Vincenzo Librandi, Apr 15 2015 *) PROG (PARI) vector(20, n, n--; (n!)^2-n!) \\ Michel Marcus, Apr 15 2015 (Magma) [Factorial(n)*(Factorial(n)-1): n in [0..30]]; // Vincenzo Librandi, Apr 15 2015 CROSSREFS Cf. A000142 (n!). Sequence in context: A072976 A143414 A099046 * A208881 A297490 A324957 Adjacent sequences: A020544 A020545 A020546 * A020548 A020549 A020550 KEYWORD nonn AUTHOR Simon Plouffe 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 07:08 EDT 2024. Contains 371698 sequences. (Running on oeis4.)