id:A005396 - OEIS Search Results

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Number of 2n-step polygons on honeycomb.
(Formerly M4043)

+0
1

0, 6, 0, 30, 24, 168, 288, 1170, 2760 (list; graph; listen)

	OFFSET	`2,2`
	REFERENCES	`N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).` `M. E. Fisher and M. F. Sykes, Excluded-volume problem and the Ising model of ferromagnetism, Phys. Rev. 114 (1959), 45-58.`
	CROSSREFS	`Sequence in context: A062254 A028849 A138704 this_sequence A056462 A047762 A167316` `Adjacent sequences: A005393 A005394 A005395 this_sequence A005397 A005398 A005399`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.