Search: id:A135227
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%I A135227
%S A135227 1,2,1,3,2,1,4,3,3,1,5,4,6,4,1,6,5,10,10,5,1,7,6,15,20,15,6,1,8,7,21,35,
%T A135227 35,21,7,1,9,8,28,56,70,56,28,8,1,10,9,36,84,126,126,84,36,9,1
%N A135227 A000012 * A135225.
%C A135227 Row sums = A006127: (1, 3, 6, 11, 20, 37,...).
%F A135227 A000012 * A135225 as infinite lower triangular matrices. Left border 
               of 1's in Pascal's Triangle (A007318) is replaced with a column of 
               (1,2,3,...).
%e A135227 First few rows of the triangle are:
%e A135227 1;
%e A135227 1, 2;
%e A135227 3, 2, 1;
%e A135227 4, 3, 3, 1;
%e A135227 5, 4, 6, 4, 1;
%e A135227 6, 5, 10, 10, 5, 1;
%e A135227 7, 6, 15, 20, 15, 6, 1;
%e A135227 ...
%Y A135227 Cf. A007318, A006127, A135225.
%Y A135227 Sequence in context: A007336 A133334 A003603 this_sequence A104325 A133084 
               A118851
%Y A135227 Adjacent sequences: A135224 A135225 A135226 this_sequence A135228 A135229 
               A135230
%K A135227 nonn,tabl
%O A135227 0,2
%A A135227 Gary W. Adamson (qntmpkt(AT)yahoo.com), Nov 23 2007

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