Search: id:A000772
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%I A000772
%S A000772 1,1,2,6,23,107,583,3633,25444,197620,1684295,15618141,156453857,
%T A000772 1683050189,19344093070,236497985706,3063827565763,41916787157011,
%U A000772 603799270943519,9132945141812301,144708157060239704
%N A000772 Expansion of exp( tan x + sec x - 1).
%C A000772 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
%Y A000772 Sequence in context: A165489 A125273 A130908 this_sequence A113226 A071075 
               A007555
%Y A000772 Adjacent sequences: A000769 A000770 A000771 this_sequence A000773 A000774 
               A000775
%K A000772 nonn
%O A000772 0,3
%A A000772 N. J. A. Sloane (njas(AT)research.att.com).

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