Triangle T(n,k) = A008292(n+1,k+1) + A060187(n+1,k+1)- 1 read along rows 0<=k<=n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =9a(5) =1a(6) =1a(7) =33a(8) =33a(9) =1a(10) =1a(11) =101a(12) =295a(13) =101a(14) =1a(15) =1a(16) =293a(17) =1983a(18) =1983a(19) =293a(20) =1a(21) =1a(22) =841a(23) =11733a(24) =25963a(25) =11733a(26) =841a(27) =1a(28) =1a(29) =2425