id:A054976 - OEIS Search Results

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Number of binary n X n matrices with no zero rows or columns, up to row and column permutation.

+0
9

1, 3, 17, 179, 3835, 200082, 29610804, 13702979132, 20677458750966, 103609939177198046, 1745061194503344181714, 99860890306900024150675406, 19611238933283757244479826044874 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n)=A002724(n)-2*A002725(n-1)+A002724(n-1).`
	CROSSREFS	`Cf. A048291.` `Sequence in context: A015083 A053934 A126443 this_sequence A088678 A133991 A009494` `Adjacent sequences: A054973 A054974 A054975 this_sequence A054977 A054978 A054979`
	KEYWORD	`easy,nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)Eunet.yu), May 27 2000`
	EXTENSIONS	`More terms from David Wasserman (dwasserm(AT)earthlink.net), Mar 06 2002`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

AT&T Labs Research