id:A007776 - OEIS Search Results

Search: id:A007776

Displaying 1-1 of 1 results found.

page 1

Number of connected posets with n elements of height 1.

+0
1

1, 2, 4, 10, 27, 88, 328, 1460, 7799, 51196, 422521, 4483460, 62330116, 1150504224, 28434624153, 945480850638, 42417674401330, 2572198227615998, 211135833162079184, 23487811567341121158, 3545543330739039981738 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`EULERi transform of A048194 and A049312. - Detlef Pauly (dettodet(AT)yahoo.de) and Vladeta Jovovic (vladeta(AT)Eunet.yu). - Vladeta Jovovic (vladeta(AT)Eunet.yu), Jul 25 2003`
	LINKS	`N. J. A. Sloane, Transforms` `Index entries for sequences related to posets`
	CROSSREFS	`Cf. A005142, A002031 (labeled case).` `Sequence in context: A121690 A138356 A057786 this_sequence A123428 A005975 A048193` `Adjacent sequences: A007773 A007774 A007775 this_sequence A007777 A007778 A007779`
	KEYWORD	`nonn`
	AUTHOR	`gw(AT)informatik.Uni-Koeln.DE (Georg Wambach)`
	EXTENSIONS	`More terms from Vladeta Jovovic (vladeta(AT)Eunet.yu), Jul 25 2003`

page 1

Search completed in 0.002 seconds

Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

AT&T Labs Research