A023994 - OEIS

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A023994

Number of isomorphism types of symmetric configurations n_4.

1, 1, 4, 19, 1972, 971171 (list; graph; refs; listen; history; internal format)

	OFFSET	`13,3`
	LINKS	`A. Betten, More information`
	CROSSREFS	`Sequence in context: A080991 A000844 A000863 * A002813 A104159 A039921` `Adjacent sequences: A023991 A023992 A023993 * A023995 A023996 A023997`
	KEYWORD	`hard,nonn`
	AUTHOR	`Anton Betten (Anton.Betten(AT)uni-bayreuth.de)`

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Last modified February 16 13:48 EST 2012. Contains 205921 sequences.