a(n) = [x^n] Product_{k>=1} 1/(1 - x^k)^(sigma_n(k)-k^n).
A321260
a(n) = [x^n] Product_{k>=1} 1/(1 - x^k)^(sigma_n(k)-k^n).
Terms
- a(0) =1a(1) =0a(2) =1a(3) =1a(4) =18a(5) =2a(6) =861a(7) =132a(8) =106024a(9) =40910a(10) =72980055a(11) =6838271a(12) =228282942581a(13) =27620223647
External references
- oeis: A321260