Expansion of e.g.f. Product_{k>=1} (1 + x^k/k)^2.
A371389
Expansion of e.g.f. Product_{k>=1} (1 + x^k/k)^2.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =16a(4) =74a(5) =388a(6) =2756a(7) =20872a(8) =180008a(9) =1758672a(10) =18937152a(11) =221914944a(12) =2832193008a(13) =39039810912a(14) =575502635808
External references
- oeis: A371389