id:A088791 - OEIS Search Results

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Coefficient of x^n in A(x)^n is A000670(n), which gives preferential arrangements of n labeled elements.

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1, 1, 1, 2, 8, 46, 337, 2976, 30627, 359222, 4725968, 68903766, 1102712316, 19219507328, 362428546833, 7352854216056, 159705991698432, 3697928742242694, 90933523698184947, 2366758931071064064 (list; graph; listen)

	OFFSET	`0,4`
	FORMULA	`G.f. satisfies: A(x)^2 = A(xA(x)) + xA(x).`
	CROSSREFS	`Sequence in context: A006664 A141117 A005840 this_sequence A111552 A128085 A052801` `Adjacent sequences: A088788 A088789 A088790 this_sequence A088792 A088793 A088794`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Oct 16 2003`

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.

AT&T Labs Research