Search: id:A079223
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%I A079223
%S A079223 1,1,2,5,11,26,66,161,420,1093,2916,7819,21304,58321,161233,448090,
%T A079223 1253252,3521389,9941693,28175716,80152141,228747967,654817275,
%U A079223 1879602446,5408974390,15601662378,45098766532,130624550412
%N A079223 Number of Catalan objects fixed by two-fold application of the gatomorphisms 
               A057511/A057512 (Deep rotation of general parenthesizations/plane 
               trees).
%F A079223 a(n) = A079216(n, 2)
%p A079223 A079223 := n -> A079216bi(n,2);
%Y A079223 The second row of A079216. The leftmost edge of the triangle A079218 
               and also its row sums shifted by one. Occurs for first time in A073202 
               as row 245. Cf. A057546, A079224, A079225, A079226, A079227.
%Y A079223 Sequence in context: A082397 A051286 A025245 this_sequence A095892 A000664 
               A067922
%Y A079223 Adjacent sequences: A079220 A079221 A079222 this_sequence A079224 A079225 
               A079226
%K A079223 nonn
%O A079223 0,3
%A A079223 Antti Karttunen (my_firstname.my_surname(AT)iki.fi) Jan 03 2002

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