Triangle T(n,m) = A060187(n+1,m+1) + 2*binomial(n,m) - 2, read by rows.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =8a(5) =1a(6) =1a(7) =27a(8) =27a(9) =1a(10) =1a(11) =82a(12) =240a(13) =82a(14) =1a(15) =1a(16) =245a(17) =1700a(18) =1700a(19) =245a(20) =1a(21) =1a(22) =732a(23) =10571a(24) =23586a(25) =10571a(26) =732a(27) =1a(28) =1a(29) =2191