The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A237580 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A237580

a(n) = (2n)! - n! + 1.
(history; published version)

#18 by Charles R Greathouse IV at Thu Sep 08 08:46:06 EDT 2022

PROG

(MAGMAMagma) [Factorial(2*n)-Factorial(n)+1: n in [0..15]]; // Vincenzo Librandi, Feb 11 2014

Discussion

Thu Sep 08

08:46

OEIS Server: https://oeis.org/edit/global/2944

#17 by Bruno Berselli at Wed Oct 16 06:20:31 EDT 2019

STATUS

reviewed

approved

#16 by Joerg Arndt at Wed Oct 16 01:45:07 EDT 2019

STATUS

proposed

reviewed

#15 by Michel Marcus at Wed Oct 16 00:52:52 EDT 2019

STATUS

editing

proposed

#14 by Michel Marcus at Wed Oct 16 00:52:49 EDT 2019

NAME

a(n) = (2n)! - n! + 1.

CROSSREFS

Cf. A000142 (n!), A010050 ((2n)!)

STATUS

approved

editing

#13 by Joerg Arndt at Tue Feb 11 02:47:50 EST 2014

STATUS

reviewed

approved

#12 by Bruno Berselli at Tue Feb 11 02:47:02 EST 2014

STATUS

proposed

reviewed

#11 by Bruno Berselli at Tue Feb 11 02:46:57 EST 2014

STATUS

editing

proposed

#10 by Bruno Berselli at Tue Feb 11 02:46:48 EST 2014

PROG

(MAGMA) [Factorial(2*n) - Factorial(n) + 1: n in [0..15]]; // Vincenzo Librandi, Feb 11 2014

STATUS

proposed

editing

#9 by Vincenzo Librandi at Tue Feb 11 01:00:53 EST 2014

STATUS

editing

proposed