Search: id:A129687
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%I A129687
%S A129687 1,1,1,2,2,1,2,4,3,1,2,6,7,4,1,2,8,13,11,5,1,2,10,21,24,16,6,1,2,12,31,
%T A129687 45,40,22,7,1,2,14,43,76,85,62,29,8,1,2,16,57,119,161,147,91,37,9,1
%N A129687 A129686 * A007318.
%C A129687 Row sums = A084215: (1, 2, 5, 10, 20, 40, 80,...). A007318 * A129686 
               = A124725.
%F A129687 A129686 * A007318 (Pascal's Triangle), as infinite lower triangular matrices.
%e A129687 First few rows of the triangle are:
%e A129687 1;
%e A129687 1, 1;
%e A129687 2, 2, 1;
%e A129687 2, 4, 3, 1;
%e A129687 2, 6, 7, 4, 1;
%e A129687 2, 8, 13, 11, 5, 1;
%e A129687 2, 10, 21, 24, 16, 6, 1;
%e A129687 2, 12, 31, 45, 40, 22, 7, 1;
%e A129687 ...
%Y A129687 Cf. A129686, A007318, A124725.
%Y A129687 Sequence in context: A066954 A144925 A029262 this_sequence A128176 A144963 
               A035374
%Y A129687 Adjacent sequences: A129684 A129685 A129686 this_sequence A129688 A129689 
               A129690
%K A129687 nonn,tabl
%O A129687 1,4
%A A129687 Gary W. Adamson (qntmpkt(AT)yahoo.com), Apr 28 2007

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