id:A054751 - OEIS Search Results

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Number of inequivalent n X n matrices over GF(4) under action of dihedral group of the square D_4.

+0
2

1, 4, 55, 34960, 537157696, 140738033618944, 590295811483987148800, 39614081257168338331296071680, 42535295865117309120430975675097153536, 730750818665451459102461990840694008379514814464 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`1/8(4^(n^2)+24^(n^2/4)+34^(n^2/2)+24^((n^2+n)/2)) if n is even and 1/8(4^(n^2)+24^((n^2+3)/4)+4^((n^2+1)/2)+4*4^((n^2+n)/2)) if n is odd.`
	CROSSREFS	`Cf. A054247.` `Sequence in context: A073352 A099122 A001500 this_sequence A006592 A077122 A020540` `Adjacent sequences: A054748 A054749 A054750 this_sequence A054752 A054753 A054754`
	KEYWORD	`easy,nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)Eunet.yu), May 15 2000`

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

AT&T Labs Research