a(n) = [x^n] exp(Sum_{k>=1} x^k/(k*(1 - n*x^k))).
A305207
a(n) = [x^n] exp(Sum_{k>=1} x^k/(k*(1 - n*x^k))).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =13a(4) =95a(5) =921a(6) =11586a(7) =176324a(8) =3162447a(9) =65233120a(10) =1521743103a(11) =39609506223
External references
- oeis: A305207