id:A055544 - OEIS Search Results

Search: id:A055544

Displaying 1-1 of 1 results found.

page 1

Total number of nodes in all rooted trees with n nodes.

+0
4

1, 2, 6, 16, 45, 120, 336, 920, 2574, 7190, 20262, 57192, 162318, 461622, 1317165, 3766096, 10792399, 30980862, 89084844, 256524560, 739658472, 2135213982, 6170505665, 17849399616, 51679366125, 149750549260, 434260826883 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.` `Index entries for sequences related to rooted trees` `Eric Weisstein's World of Mathematics, Graph Edge`
	FORMULA	`a(n) = n*A000081(n).`
	CROSSREFS	`Cf. A000081, A000169, A055543, A055544.` `Sequence in context: A026134 A105696 A074413 this_sequence A126285 A026163 A005717` `Adjacent sequences: A055541 A055542 A055543 this_sequence A055545 A055546 A055547`
	KEYWORD	`nonn`
	AUTHOR	`Eric Weisstein (eric(AT)weisstein.com)`

page 1

Search completed in 0.002 seconds

Last modified December 3 22:15 EST 2009. Contains 170310 sequences.

AT&T Labs Research