Triangle T(n,k) = A008292(n+1,k+1) + A176487(n,k) - 1, 0<=k<=n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =8a(5) =1a(6) =1a(7) =23a(8) =23a(9) =1a(10) =1a(11) =54a(12) =136a(13) =54a(14) =1a(15) =1a(16) =117a(17) =612a(18) =612a(19) =117a(20) =1a(21) =1a(22) =244a(23) =2395a(24) =4850a(25) =2395a(26) =244a(27) =1a(28) =1a(29) =499