Square array T(n,k) = ((n+k-1)*(n+k-2)/2+n)^k, n,k > 0 read by antidiagonals.

Terms

a(0) =1a(1) =4a(2) =3a(3) =64a(4) =25a(5) =6a(6) =2401a(7) =512a(8) =81a(9) =10a(10) =161051a(11) =20736a(12) =2197a(13) =196a(14) =15a(15) =16777216a(16) =1419857a(17) =104976a(18) =6859a(19) =400a(20) =21a(21) =2494357888a(22) =148035889a(23) =7962624a(24) =390625a(25) =17576a(26) =729a(27) =28a(28) =500246412961a(29) =21870000000