%I #10 Jun 07 2023 08:51:15
%S 1,0,1,1,1,1,0,3,2,1,1,3,6,3,1,0,5,9,10,4,1,1,5,15,19,15,5,1,0,7,20,
%T 35,34,21,6,1,1,7,28,55,70,55,28,7,1,0,9,35,84,125,126,83,36,8,1,1,9,
%U 45,119,210,251,210,119,45,9,1,0,11,54,165,329,462,461,330,164,55,10,1
%N Triangle read by rows: A007318 + A128174 - A000012 as infinite lower triangular matrices.
%C Row sums = A084174: (1, 1, 3, 6, 14, 29, 61, ...).
%e First few rows of the triangle:
%e 1;
%e 0, 1;
%e 1, 1, 1;
%e 0, 3, 2, 1;
%e 1, 3, 6, 3, 1;
%e 0, 5, 9, 10, 4, 1;
%e 1, 5, 15, 19, 15, 5, 1;
%e 0, 7, 20, 35, 34, 21, 6, 1;
%e 1, 7, 28, 55, 70, 55, 28, 7, 1;
%e ...
%Y Cf. A084174, A128174.
%K nonn,tabl
%O 0,8
%A _Gary W. Adamson_, Oct 29 2007
%E a(45) = 1 corrected and more terms from _Georg Fischer_, Jun 07 2023
|