Expansion of e.g.f. (1/(1 - x)) * Product_{k>=2} 1/(1 - x^k)^(phi(k)/2), where phi() is the Euler totient function (A000010).
A308457
Expansion of e.g.f. (1/(1 - x)) * Product_{k>=2} 1/(1 - x^k)^(phi(k)/2), where phi() is the Euler totient function (A000010).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =15a(4) =93a(5) =765a(6) =6615a(7) =73395a(8) =855225a(9) =11348505a(10) =163593675a(11) =2633729175a(12) =44537325525a(13) =829112008725
External references
- oeis: A308457