Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of exp(Sum_{j>0} sigma_k(j)*x^j/j) in powers of x.
A294946
Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of exp(Sum_{j>0} sigma_k(j)*x^j/j) in powers of x.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =1a(7) =1a(8) =5a(9) =12a(10) =1a(11) =1a(12) =9a(13) =32a(14) =82a(15) =1a(16) =1a(17) =17a(18) =90a(19) =304a(20) =725a(21) =1a(22) =1a(23) =33a(24) =260a(25) =1162a(26) =3537a(27) =8811a(28) =1a(29) =1
External references
- oeis: A294946