A109458 - OEIS

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A109458

Number of inequivalent Krom functions on n variables (or 2SAT instances) under permutations of variables.

2, 4, 12, 48, 308, 3028, 49490, 1350894, 62154403 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	REFERENCES	`D. E. Knuth, The Art of Computer Programming, Vol. 4A, Section 7.1.1, p. 79.`
	CROSSREFS	`See A109457 for definitions and references.` `Sequence in context: A030801 A082480 A093934 * A030963 A030879 A030940` `Adjacent sequences: A109455 A109456 A109457 * A109459 A109460 A109461`
	KEYWORD	`nonn,hard,more`
	AUTHOR	`D. E. Knuth, Aug 24 2005`

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Last modified February 14 14:47 EST 2012. Contains 205623 sequences.