|
%I #6 Mar 25 2022 00:33:49
%S 1,1,1,3,1,1,3,3,1,1,5,3,3,1,1,5,5,3,3,1,1,7,5,5,3,3,1,1,7,7,5,5,3,3,
%T 1,1,9,7,7,5,5,3,3,1,1,9,9,7,7,5,5,3,3,1,1
%N (A000012 * A128174 + A128174 * A000012) - A000012.
%C Row sums = A000982: (1, 2, 5, 8, 13, 18, 25, ...).
%F (A000012 * A128174 + A128174 * A000012) - A000012, as infinite lower triangular matrices. Triangle read by rows, n-th row = n terms of odd numbers repeated, starting from the right.
%e First few rows of the triangle:
%e 1;
%e 1, 1;
%e 3, 1, 1;
%e 3, 3, 1, 1;
%e 5, 3, 3, 1, 1;
%e 5, 5, 3, 3, 1, 1;
%e ...
%Y Cf. A128174, A000012, A000982.
%K nonn,tabl
%O 0,4
%A _Gary W. Adamson_, Oct 25 2007
|
