%I A131398
%S A131398 1,1,1,2,4,1,2,8,7,1,2,11,17,10,1,2,14,29,29,13,1,2,17,44,59,44,16,1,2,
%T A131398 20,62,104,104,62,19,1,2,23,83,167,209,167,83,22,1,2,26,107,251,377,377,
%U A131398 251,107,25,1
%N A131398 3*A007318 - A097806 - A000012.
%C A131398 Row sums = A077802, (1, 2, 7, 18, 41, 88,...).
%F A131398 3*A007318 - A097806 - A000012 as infinite lower triangular matrices.
%e A131398 First few rows of the triangle are:
%e A131398 1;
%e A131398 1, 1;
%e A131398 2, 4, 1;
%e A131398 2, 8, 7, 1;
%e A131398 2, 11, 17, 10, 1;
%e A131398 2, 14, 29, 29, 13, 1;
%e A131398 ...
%Y A131398 Cf. A007318, A097806, A000012, A077802.
%Y A131398 Sequence in context: A035492 A101229 A057176 this_sequence A050980 A053451 
               A141843
%Y A131398 Adjacent sequences: A131395 A131396 A131397 this_sequence A131399 A131400 
               A131401
%K A131398 nonn,tabl
%O A131398 0,4
%A A131398 Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 05 2007