id:A048808 - OEIS Search Results

Search: id:A048808

Displaying 1-1 of 1 results found.

page 1

Number of rooted trees with n nodes with every leaf at height 3.

+0
10

1, 1, 2, 3, 5, 7, 12, 18, 27, 42, 64, 96, 146, 219, 327, 491, 730, 1084, 1608, 2376, 3500, 5154, 7563, 11076, 16193, 23625, 34395, 50005, 72550, 105089, 151984, 219448, 316362, 455434, 654661, 939736, 1347137, 1928593, 2757449, 3937675 (list; graph; listen)

	OFFSET	`4,3`
	LINKS	`N. J. A. Sloane, Transforms` `Index entries for sequences related to rooted trees`
	FORMULA	`Euler transform of A002865 (with a(0)=0) shifted right.`
	CROSSREFS	`Cf. A048809-A048816.` `Sequence in context: A080528 A002965 A091696 this_sequence A013983 A143642 A060986` `Adjacent sequences: A048805 A048806 A048807 this_sequence A048809 A048810 A048811`
	KEYWORD	`nonn`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Apr 15 1999.`

page 1

Search completed in 0.002 seconds

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research