id:A116796 - OEIS Search Results

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Number of permutations of length n which avoid the patterns 2314, 3241, 4132.

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1, 2, 6, 21, 72, 236, 745, 2286, 6866, 20285, 59156, 170712, 488401, 1387226, 3916062, 10996581, 30737760, 85573316, 237387961, 656451270, 1810142186, 4978643597, 13661617196, 37409025456, 102238082977, 278920277426 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Lara Pudwell, Systematic Studies in Pattern Avoidance, 2005.`
	FORMULA	`G.f.: A(x) = {(4x^3-9x^2+5x-1)x}/{(x^2-3x+1)^2(x-1)}`
	CROSSREFS	`Sequence in context: A116758 A116838 A116836 this_sequence A116779 A116737 A116834` `Adjacent sequences: A116793 A116794 A116795 this_sequence A116797 A116798 A116799`
	KEYWORD	`nonn,easy`
	AUTHOR	`Lara Pudwell (Lara.Pudwell(AT)valpo.edu), Feb 26 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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