id:A061640 - OEIS Search Results

Search: id:A061640

Displaying 1-1 of 1 results found.

page 1

!n*n!.

+0
1

0, 1, 4, 24, 240, 4080, 110880, 4404960, 238452480, 16777393920, 1484592883200, 161180605555200, 21054378333542400, 3256459844769331200, 588451470437627596800, 122827588904844375552000 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n) = A000142(n)*A003422(n).`
	MAPLE	`a:=n->sum((n+1)!*j!, j=0..n): seq(a(n), n=-1..15); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 08 2007`
	CROSSREFS	`Cf. A000142 A003422.` `Cf. A000142, A003422.` `Sequence in context: A034256 A074598 A052718 this_sequence A126391 A006088 A095340` `Adjacent sequences: A061637 A061638 A061639 this_sequence A061641 A061642 A061643`
	KEYWORD	`easy,nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Jun 13 2001`
	EXTENSIONS	`More terms from Larry Reeves (larryr(AT)acm.org), Jun 19 2001`

page 1

Search completed in 0.002 seconds

Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research