Array read by ascending antidiagonals: A(n, k) = (k^n - 1)^2/(k - 1), with k >= 2.

Terms

a(0) =0a(1) =1a(2) =0a(3) =9a(4) =2a(5) =0a(6) =49a(7) =32a(8) =3a(9) =0a(10) =225a(11) =338a(12) =75a(13) =4a(14) =0a(15) =961a(16) =3200a(17) =1323a(18) =144a(19) =5a(20) =0a(21) =3969a(22) =29282a(23) =21675a(24) =3844a(25) =245a(26) =6a(27) =0a(28) =16129a(29) =264992