Square array T(n,k) = k^n - k + 1 read by antidiagonals.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =7a(8) =7a(9) =1a(10) =1a(11) =15a(12) =25a(13) =13a(14) =1a(15) =1a(16) =31a(17) =79a(18) =61a(19) =21a(20) =1a(21) =1a(22) =63a(23) =241a(24) =253a(25) =121a(26) =31a(27) =1a(28) =1a(29) =127