id:A020873 - OEIS Search Results

Search: id:A020873

Displaying 1-1 of 1 results found.

page 1

A020873

Number of cycles in Moebius ladder M_n.

+0
1

2, 3, 7, 15, 29, 53, 95, 171, 313, 585, 1115, 2159, 4229, 8349, 16567, 32979, 65777, 131345, 262451, 524631, 1048957, 2097573, 4194767, 8389115, 16777769, 33555033, 67109515, 134218431, 268436213 (list; graph; listen)

	OFFSET	`0,1`
	REFERENCES	`J. P. McSorley, Counting structures in the Moebius ladder, Discrete Math., 184 (1998), 137-164.`
	FORMULA	`2^n+n^2-n+1.`
	CROSSREFS	`Sequence in context: A066460 A006884 A074742 this_sequence A049958 A153010 A076993` `Adjacent sequences: A020870 A020871 A020872 this_sequence A020874 A020875 A020876`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

page 1

Search completed in 0.002 seconds

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research