Search: id:A079508
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%I A079508
%S A079508 1,0,1,0,1,1,0,0,5,1,0,0,5,9,1,0,0,0,21,14,1,0,0,0,14,56,20,1,0,0,0,0,
               84,120
%N A079508 Triangle T(n,k) (n>=2, k>=1) of Raney numbers read by rows.
%C A079508 There are only m nonzero entries in the m-th column.
%D A079508 G. Kreweras, Les preordres totaux compatibles avec un ordre partiel. 
               Math. Sci. Humaines No. 53 (1976), 5-30.
%D A079508 G. N. Raney, Functional composition patterns and power series reversion, 
               Trans. Amer. Math. Soc., 94 (1960), pp. 441-.
%F A079508 How are these defined?
%e A079508 1; 0,1; 0,1,1; 0,0,5,1; 0,0,5,9,1; ...
%Y A079508 Sum of nonzero entries in each column gives A001003. Alternating sum 
               of each column is 1. Leading Second diagonal gives A079509.
%Y A079508 Sequence in context: A129205 A098173 A058177 this_sequence A007912 A019755 
               A085475
%Y A079508 Adjacent sequences: A079505 A079506 A079507 this_sequence A079509 A079510 
               A079511
%K A079508 nonn,tabl,more
%O A079508 2,9
%A A079508 N. J. A. Sloane (njas(AT)research.att.com), Jan 21 2003

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