Expansion of g.f. Product_{k>=1} (1 - x^k)^phi(k), where phi() is the Euler totient function (A000010).
A346770
Expansion of g.f. Product_{k>=1} (1 - x^k)^phi(k), where phi() is the Euler totient function (A000010).
Terms
- a(0) =1a(1) =-1a(2) =-1a(3) =-1a(4) =0a(5) =0a(6) =3a(7) =1a(8) =4a(9) =2a(10) =3a(11) =-5a(12) =1a(13) =-13a(14) =-5a(15) =-13a(16) =-6a(17) =-22a(18) =12a(19) =-12a(20) =35a(21) =17a(22) =59a(23) =11a(24) =101a(25) =-1a(26) =81a(27) =-35a(28) =45a(29) =-165
External references
- oeis: A346770