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Square of A127648 = Triangle read by rows, n^2 preceded by (n-1) zeros.
4

%I #3 Mar 30 2012 17:25:18

%S 1,0,4,0,0,9,0,0,0,16,0,0,0,0,25,0,0,0,0,0,36,0,0,0,0,0,0,49

%N Square of A127648 = Triangle read by rows, n^2 preceded by (n-1) zeros.

%e First few rows of the triangle are:

%e 1;

%e 0, 4;

%e 0, 0, 9;

%e 0, 0, 0, 16;

%e 0, 0, 0, 0, 25;

%e ...

%Y Cf. A127648.

%K nonn,tabl

%O 1,3

%A _Gary W. Adamson_, Jan 26 2007