Expansion of e.g.f. Sum_{k>=1} tau(k)*(exp(x) - 1)^k/k!, where tau = number of divisors (A000005).
A308554
Expansion of e.g.f. Sum_{k>=1} tau(k)*(exp(x) - 1)^k/k!, where tau = number of divisors (A000005).
Terms
- a(0) =1a(1) =3a(2) =9a(3) =30a(4) =113a(5) =472a(6) =2145a(7) =10514a(8) =55428a(9) =313255a(10) =1886888a(11) =12029741a(12) =80701715a(13) =567541878a(14) =4175795147a(15) =32104799401a(16) =257561662496
External references
- oeis: A308554