id:A054407 - OEIS Search Results

Search: id:A054407

Displaying 1-1 of 1 results found.

page 1

Number of asymmetric n X n binary matrices under action of dihedral group of the square D_4.

+0
4

0, 0, 0, 36, 7860, 4177152, 8589313152, 70368605798400, 2305842990423490560, 302231454885790246502400, 158456325028519245775644917760 (list; graph; listen)

	OFFSET	`0,4`
	FORMULA	`(1/8)(2^(n^2)-22^((n^2+n)/2)-32^(n^2/2)+22^(n^2/4)+22^((n^2+2n)/4)) if n is even and (1/8)(2^(n^2)-42^((n^2+n)/2)-2^((n^2+1)/2)+42^((n^2+2n+1)/4))/8 if n is odd.`
	CROSSREFS	`Cf. A054247.` `Adjacent sequences: A054404 A054405 A054406 this_sequence A054408 A054409 A054410` `Sequence in context: A068272 A068284 A013739 this_sequence A058466 A141475 A134374`
	KEYWORD	`easy,nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)Eunet.yu), May 08 2000`

page 1

Search completed in 0.002 seconds

Last modified October 13 02:37 EDT 2008. Contains 145008 sequences.

AT&T Labs Research