T(n,k) = 3*A046802(n,k) - 2*A007318(n,k), triangle read by rows (0 <= k <= n).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =1a(6) =1a(7) =15a(8) =15a(9) =1a(10) =1a(11) =37a(12) =87a(13) =37a(14) =1a(15) =1a(16) =83a(17) =373a(18) =373a(19) =83a(20) =1a(21) =1a(22) =177a(23) =1389a(24) =2609a(25) =1389a(26) =177a(27) =1a(28) =1a(29) =367