id:A032175 - OEIS Search Results

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Number of connected functions of n points with no symmetries.

+0
2

1, 1, 2, 4, 9, 18, 42, 91, 208, 470, 1089, 2509, 5869, 13730, 32371, 76510, 181708, 432635, 1033656, 2475384, 5943395, 14299532, 34475030, 83263872, 201441431, 488092897, 1184353643, 2877611984, 7000359244, 17049288304 (list; graph; listen)

	OFFSET	`1,3`
	LINKS	`C. G. Bower, Transforms (2)`
	FORMULA	`"CHK" (necklace, identity, unlabeled) transform of A004111.`
	CROSSREFS	`Cf. A002861.` `Sequence in context: A026732 A094291 A026765 this_sequence A000678 A081490 A129784` `Adjacent sequences: A032172 A032173 A032174 this_sequence A032176 A032177 A032178`
	KEYWORD	`nonn`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net)`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research