Expansion of Product_{i>=1} (1-x^i)^(1/i); also of exp(- Sum_{n>=1}(d(n)*x^n/n)) where d(n) is the number of divisors of n.
A028343
Expansion of Product_{i>=1} (1-x^i)^(1/i); also of exp(- Sum_{n>=1}(d(n)*x^n/n)) where d(n) is the number of divisors of n.
Terms
- a(0) =1a(1) =-1a(2) =-1a(3) =1a(4) =-1a(5) =41a(6) =-131a(7) =1499a(8) =-4159a(9) =10639a(10) =100871a(11) =4142249a(12) =-111459041a(13) =1127459321a(14) =1797229589a(15) =-185028952109a(16) =706529394689
External references
- oeis: A028343