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 A137649 Triangle read by rows, A000012 * A008277. 1

%I

%S 1,2,1,3,4,1,4,11,7,1,5,26,32,11,1,6,57,122,76,16,1,7,120,423,426,156,

%T 22,1,8,247,1389,2127,1206,288,29,1,9,502,4414,9897,8157,2934,491,37,

%U 1,10,1013,13744,44002,50682,25761,6371,787,46,1

%N Triangle read by rows, A000012 * A008277.

%C Row sums = A024716: (1, 3, 8, 23, 75, 278,...). A137650 = A008277 * A000012

%F A000012 * A008277 (Stirling2 triangle) as infinite lower triangular matrices. Partial column sums of A008277.

%e First few rows of the triangle are:

%e 1;

%e 2, 1;

%e 3, 4, 1;

%e 4, 11, 7, 1;

%e 5, 26, 32, 11, 1;

%e 6, 57, 122, 76, 16, 1;

%e 7, 120, 423, 426, 156, 22, 1;

%e ...

%e Row 4 = (4, 11, 7, 1) = partial column sums of the first 4 rows of A008277:

%e 1;

%e 1, 1;

%e 1, 3, 1;

%e 1, 7, 6, 1;

%e ...

%Y Cf. A024716, A008277.

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, Feb 01 2008

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Last modified August 11 03:22 EDT 2020. Contains 336421 sequences. (Running on oeis4.)