Square array A(n,k), n >= 1, k >= 0, read by antidiagonals: A(n,k) = Sum_{j=1..n} j^k * floor(n/j).

Terms

a(0) =1a(1) =1a(2) =3a(3) =1a(4) =4a(5) =5a(6) =1a(7) =6a(8) =8a(9) =8a(10) =1a(11) =10a(12) =16a(13) =15a(14) =10a(15) =1a(16) =18a(17) =38a(18) =37a(19) =21a(20) =14a(21) =1a(22) =34a(23) =100a(24) =111a(25) =63a(26) =33a(27) =16a(28) =1a(29) =66