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A001263 * A128064 (unsigned).
1

%I #7 Apr 01 2022 21:25:03

%S 1,2,2,4,8,3,7,24,21,4,11,60,90,44,5,16,130,300,260,80,6,22,2252,840,

%T 1120,630,132,7,29,448,2058,3920,3430,1344,203,8,37,744,4536,11760,

%U 14700,9072,2604,296,9,46,1170,9180,31248,52920,46872,21420,4680,414,10

%N A001263 * A128064 (unsigned).

%C Row sums = A001791: (1, 4, 15, 56, 210, ...).

%C Left column = A000124: (1, 2, 4, 7, 11, 16, 22, ...).

%F A001263 * A128064 (unsigned), A001263 = the Narayana triangle, A128064 = an infinite lower triangular matrix with (1, 2, 3, ...) in the main and subdiagonals.

%e First few rows of the triangle:

%e 1;

%e 2, 2;

%e 4, 8, 3;

%e 7, 24, 21, 4;

%e 11, 60, 90, 44, 5;

%e 16, 130, 300, 260, 80, 6;

%e 22, 252, 840, 1120, 630, 132, 7;

%e ...

%Y Cf. A001263, A128064, A001791, A000124.

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, Jan 04 2008