A001415 - OEIS

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A001415

Number of ways of folding a 2 X n strip of stamps.
(Formerly M1891 N0745)

1, 2, 8, 60, 320, 1980, 10512, 60788, 320896, 1787904, 9381840, 51081844 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	REFERENCES	`Lunnon, W. F.; Multi-dimensional map-folding. Comput. J. 14 1971 75-80.` `N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).` `N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).`
	LINKS	`Eric Weisstein's World of Mathematics, Map Folding` `Index entries for sequences obtained by enumerating foldings`
	CROSSREFS	`Sequence in context: A197941 A196076 A027278 * A053871 A052622 A001188` `Adjacent sequences: A001412 A001413 A001414 * A001416 A001417 A001418`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 15 18:22 EST 2012. Contains 205835 sequences.