Triangle T(n, k) = binomial(n, k)^2 - binomial(n, k) - 1, read by rows.

Terms

a(0) =-1a(1) =-1a(2) =-1a(3) =-1a(4) =1a(5) =-1a(6) =-1a(7) =5a(8) =5a(9) =-1a(10) =-1a(11) =11a(12) =29a(13) =11a(14) =-1a(15) =-1a(16) =19a(17) =89a(18) =89a(19) =19a(20) =-1a(21) =-1a(22) =29a(23) =209a(24) =379a(25) =209a(26) =29a(27) =-1a(28) =-1a(29) =41