id:A000772 - OEIS Search Results

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Expansion of exp( tan x + sec x - 1).

+0
3

1, 1, 2, 6, 23, 107, 583, 3633, 25444, 197620, 1684295, 15618141, 156453857, 1683050189, 19344093070, 236497985706, 3063827565763, 41916787157011, 603799270943519, 9132945141812301, 144708157060239704 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`The number of elevated increasing binary trees. There is no restriction on the outdegree at the root. - Wenjin Woan (wjwoan(AT)hotmail.com), Jan 09 2008`
	CROSSREFS	`Sequence in context: A165489 A125273 A130908 this_sequence A113226 A071075 A007555` `Adjacent sequences: A000769 A000770 A000771 this_sequence A000773 A000774 A000775`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.

AT&T Labs Research