Square array A(n,k), n>=1, k>=1, read by antidiagonals, with A(1,k)=1 and sequence a_k of column k shifts left when Dirichlet convolution (DC:(b,b)->a) applied k times.
A144324
Square array A(n,k), n>=1, k>=1, read by antidiagonals, with A(1,k)=1 and sequence a_k of column k shifts left when Dirichlet convolution (DC:(b,b)->a) applied k times.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =2a(6) =1a(7) =1a(8) =4a(9) =4a(10) =1a(11) =1a(12) =8a(13) =16a(14) =9a(15) =1a(16) =1a(17) =16a(18) =64a(19) =70a(20) =18a(21) =1a(22) =1a(23) =32a(24) =256a(25) =540a(26) =280a(27) =40a(28) =1a(29) =1
External references
- oeis: A144324