id:A036656 - OEIS Search Results

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Number of n-node rooted unlabeled trees with out-degree <=2 and exactly 1 edge at the root.

+0
3

0, 0, 1, 1, 2, 3, 6, 11, 23, 46, 98, 207, 451, 983, 2179, 4850, 10905, 24631, 56011, 127912, 293547, 676157, 1563372, 3626149, 8436379, 19680277, 46026618, 107890609, 253450711, 596572387, 1406818759, 3323236238, 7862958391 (list; graph; listen)

	OFFSET	`0,5`
	LINKS	`Index entries for sequences related to rooted trees`
	MAPLE	`G036656 := G001190-x; A036656 := n->coeff(G036656, x, n);`
	CROSSREFS	`Except for initial terms, same as A001190.` `Sequence in context: A036591 A036592 A001190 this_sequence A090344 A130131 A123465` `Adjacent sequences: A036653 A036654 A036655 this_sequence A036657 A036658 A036659`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

AT&T Labs Research