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A129690 A129688 * A007318. 1

%I #4 Feb 20 2022 01:27:22

%S 1,1,1,3,2,1,3,5,3,1,5,8,8,4,1,5,13,16,12,5,1,7,18,29,28,17,6,1,7,25,

%T 47,57,45,23,7,1,9,32,72,104,102,68,30,8,1,9,41,104,176,206,170,98,38,

%U 9,1

%N A129688 * A007318.

%C Row sums = A084170: (1, 2, 6, 12, 52, 106, 426, ...). A129689 = A007318 * A129688. Left column = A109613: (1, 1, 3, 3, 5, 5, ...).

%F A129688 * A007318 as infinite lower triangular matrices.

%e First few rows of the triangle:

%e 1;

%e 1, 1;

%e 3, 2, 1;

%e 3, 5, 3, 1;

%e 5, 8, 8, 4, 1;

%e 5, 13, 16, 12, 5, 1;

%e 7, 18, 29, 28, 17, 6, 1;

%e ...

%Y Cf. A057711, A129689, A007318, A129688, A109613.

%K nonn,tabl

%O 1,4

%A _Gary W. Adamson_, Apr 28 2007

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Last modified August 11 03:32 EDT 2024. Contains 375059 sequences. (Running on oeis4.)