id:A101490 - OEIS Search Results

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G.f. satisfies A(x) = x*(1+A^2)^2/(1-A+A^2).

+0
3

0, 1, 1, 3, 8, 25, 80, 267, 911, 3170, 11192, 39993, 144320, 525124, 1924196, 7093603, 26288928, 97878831, 365918064, 1372982706, 5168555770, 19514482964, 73876936272, 280363191353, 1066357904128, 4064204607372 (list; graph; listen)

	OFFSET	`0,4`
	LINKS	`M. Bousquet-Melou, Limit laws for embedded trees`
	FORMULA	`a(n+1)=Sum_{k, 0<=k<=[n/2]}A039599(n-k,k)*A000108(k). - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Apr 12 2007`
	CROSSREFS	`Sequence in context: A007563 A050383 A060404 this_sequence A038665 A006372 A045900` `Adjacent sequences: A101487 A101488 A101489 this_sequence A101491 A101492 A101493`
	KEYWORD	`nonn`
	AUTHOR	`Ralf Stephan, Jan 21 2005`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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