Expansion of Product_{j>=1} 1/(1 - x^j*Product_{k>=1} 1/(1 - x^k)^(k*j))^j.
A307570
Expansion of Product_{j>=1} 1/(1 - x^j*Product_{k>=1} 1/(1 - x^k)^(k*j))^j.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =15a(4) =58a(5) =215a(6) =789a(7) =2850a(8) =10219a(9) =36330a(10) =128383a(11) =450997a(12) =1576384a(13) =5484086a(14) =18997492a(15) =65547958a(16) =225329592a(17) =771920515a(18) =2635815051a(19) =8972752531a(20) =30456389557a(21) =103095375148a(22) =348071445217
External references
- oeis: A307570