Triangle T(n, k) = 1 + abs(n! - k!)*abs(n! - (n-k)!), read by rows.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =21a(8) =21a(9) =1a(10) =1a(11) =415a(12) =485a(13) =415a(14) =1a(15) =1a(16) =11425a(17) =13453a(18) =13453a(19) =11425a(20) =1a(21) =1a(22) =431401a(23) =499729a(24) =509797a(25) =499729a(26) =431401a(27) =1a(28) =1a(29) =21768481