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Number of equivalence classes of n-valued Post functions of 2 variables under action of semi-direct product of symmetric group S_2 and complementing group C(2,n).
(Formerly M4316 N1808)

+0
7

6, 1230, 134355076, 5960467529298425, 143255899980867527046714276, 2621669158378151850086910541198116201940, 49039857307708443467467125153076407586398190249948742656 (list; graph; listen)

	OFFSET	`2,1`
	REFERENCES	`N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).` `N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).` `M. A. Harrison and R. G. High, On the cycle index of a product of permutation groups, J. Combin. Theory, 4 (1968), 277-299.` `I. Strazdins, On the number of types of l-adic functions (in Russian), Proc. Riga Polytech. Inst. 10, No. 1 (1963), 167-186.`
	CROSSREFS	`Cf. A000616, A001323.` `Sequence in context: A160857 A160005 A131675 this_sequence A060706 A052278 A067510` `Adjacent sequences: A001321 A001322 A001323 this_sequence A001325 A001326 A001327`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Aug 09 2000`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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