id:A106363 - OEIS Search Results

Search: id:A106363

Displaying 1-1 of 1 results found.

page 1

Planar trees where no branch is identical to its adjacent neighbor.

+0
3

1, 1, 0, 1, 0, 1, 3, 7, 14, 43, 115, 326, 931, 2719, 7979, 23804, 71418, 216444, 660276, 2028558, 6268350, 19479746, 60835542, 190881085, 601459251, 1902680249, 6040955223, 19245061851, 61503863732, 197135868680, 633615135842 (list; graph; listen)

	OFFSET	`1,7`
	LINKS	`Index entries for sequences related to trees`
	FORMULA	`G.f.: A(x) = B(x) + (C(x^2) - C(x)^2)/2. B(x) is g.f. of A106362. C(x) is g.f. of A106361.`
	CROSSREFS	`Cf. A002995.` `Sequence in context: A129629 A089526 A079939 this_sequence A128658 A001203 A109732` `Adjacent sequences: A106360 A106361 A106362 this_sequence A106364 A106365 A106366`
	KEYWORD	`nonn`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Apr 29 2005`

page 1

Search completed in 0.002 seconds

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

AT&T Labs Research