Square array A(n,k), n >= 1, k >= 0, read by antidiagonals: A(n,k) = Sum_{d|n, n/d odd} d^k.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =1a(7) =4a(8) =4a(9) =1a(10) =1a(11) =8a(12) =10a(13) =4a(14) =2a(15) =1a(16) =16a(17) =28a(18) =16a(19) =6a(20) =2a(21) =1a(22) =32a(23) =82a(24) =64a(25) =26a(26) =8a(27) =2a(28) =1a(29) =64