A020881 - OEIS

This site is supported by donations to The OEIS Foundation.

A020881

Number of strong restricted edge-subgraphs in Moebius ladder M_n.

18, 102, 418, 2006 (list; graph; refs; listen; history; internal format)

	OFFSET	`2,1`
	LINKS	`J. P. McSorley, Counting structures in the Moebius ladder, Discrete Math., 184 (1998), 137-164.`
	FORMULA	`For large n, (3.2143)^n < a(n) < (6.4188)^n (Th. 23.1.) - C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 17 2005`
	CROSSREFS	`Sequence in context: A140198 A107600 A008528 * A197339 A123277 A123595` `Adjacent sequences: A020878 A020879 A020880 * A020882 A020883 A020884`
	KEYWORD	`nonn,more`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

Content is available under The OEIS End-User License Agreement .

Last modified February 14 22:55 EST 2012. Contains 205685 sequences.