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Triangle read by rows: A051340^2.
0

%I #7 Feb 20 2022 14:47:20

%S 1,3,4,5,5,9,7,7,7,16,9,9,9,9,25,11,11,11,11,11,36,13,13,13,13,13,13,

%T 49,15,15,15,15,15,15,15,64

%N Triangle read by rows: A051340^2.

%C Row sums = A003215: (1, 7, 19, 37, 61, 91, 127, ...).

%F The square of A051340 as an infinite lower triangular matrix.

%e First few rows of the triangle:

%e 1;

%e 3, 4;

%e 5, 5, 9;

%e 7, 7, 7, 16;

%e 9, 9, 9, 9, 25;

%e 11, 11, 11, 11, 11, 36;

%e 13, 13, 13, 13, 13, 13, 49;

%e ...

%Y Cf. A051340, A003215.

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, May 18 2007

%E Edited by _N. J. A. Sloane_, Jan 05 2009