id:A006774 - OEIS Search Results

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Number of 2n-step polygons on honeycomb.
(Formerly M2257)

+0
1

1, 0, 3, 2, 12, 18, 65, 138, 432, 1074, 3231, 8718, 25999, 73650, 220215, 643546, 1937877, 5783700, 17564727, 53222094, 163009086, 499634508, 1542392088, 4770925446, 14832934031, 46227584010, 144632622552, 453628244950 (list; graph; listen)

	OFFSET	`3,3`
	REFERENCES	`I. G. Enting and A. J. Guttmann, Polygons on the honeycomb lattice, J. Phys. A 22 (1989), 1371-1384.`
	LINKS	`I. Jensen, Table of n, a(n) for n = 3..79 (from link below)` `I. Jensen, More terms`
	CROSSREFS	`Sequence in context: A114798 A113205 A136657 this_sequence A086551 A007214 A025232` `Adjacent sequences: A006771 A006772 A006773 this_sequence A006775 A006776 A006777`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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Last modified September 5 01:44 EDT 2008. Contains 143476 sequences.

AT&T Labs Research