id:A001010 - OEIS Search Results

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Number of symmetric foldings of a strip of n stamps.
(Formerly M0323 N0120)

+0
2

1, 2, 2, 4, 6, 8, 18, 20, 56, 48, 178, 132, 574, 348, 1870, 1008, 6144, 2812, 20314, 8420, 67534, 24396, 225472, 74756, 755672, 222556, 2540406, 693692, 8564622, 2107748, 28941258, 6656376, 98011464, 20548932 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`J. E. Koehler, Folding a strip of stamps, J. Combin. Theory, 5 (1968), 135-152.`
	LINKS	`Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.` `Index entries for sequences obtained by enumerating foldings`
	CROSSREFS	`Cf. A007822, A000682.` `Sequence in context: A123862 A089647 A145465 this_sequence A091966 A055529 A035564` `Adjacent sequences: A001007 A001008 A001009 this_sequence A001011 A001012 A001013`
	KEYWORD	`nonn,nice`
	AUTHOR	`njas, legendre(AT)biologie.ens.fr (Stephane LEGENDRE)`

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Last modified December 4 21:35 EST 2008. Contains 151309 sequences.

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