%I #15 Jan 21 2019 12:20:49
%S 1,1,1,1,0,2,1,0,1,3,1,0,0,1,5,1,0,0,1,2,7,1,0,0,0,1,2,11,1,0,0,0,1,1,
%T 4,15,1,0,0,0,0,1,2,4,22,1,0,0,0,0,1,1,2,7,30,1,0,0,0,0,0,1,1,3,8,42,
%U 1,0,0,0,0,0,1,1,2,4,12,56,1,0,0,0,0,0,0,1,1,2,5,14,77,1,0,0,0,0,0,0,1,1,1,3
%N Mirror image of the triangle A026794.
%e Triangle begins:
%e 1;
%e 1, 1;
%e 1, 0, 2;
%e 1, 0, 1, 3;
%e 1, 0, 0, 1, 5;
%e 1, 0, 0, 1, 2, 7;
%e 1, 0, 0, 0, 1, 2, 11;
%e 1, 0, 0, 0, 1, 1, 4, 15;
%e 1, 0, 0, 0, 0, 1, 2, 4, 22;
%e 1, 0, 0, 0, 0, 1, 1, 2, 7, 30;
%e 1, 0, 0, 0, 0, 0, 1, 1, 3, 8, 42;
%e 1, 0, 0, 0, 0, 0, 1, 1, 2, 4, 12, 56;
%e 1, 0, 0, 0, 0, 0, 0, 1, 1, 2, 5, 14, 77;
%e 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 3, 6, 21, 101;
%e 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 9, 24, 135;
%e ...
%Y Leading diagonal gives A000041.
%Y Second diagonal gives A002865.
%Y Row sums give A000041, n >= 1.
%Y Columns 1-4: A000012, A000007, A033322, A278105.
%Y Cf. A026794.
%K nonn,tabl
%O 1,6
%A _Omar E. Pol_, May 05 2018