E.g.f.: Product_{k>=1} (1 + k*sinh(x^k)).
A270670
E.g.f.: Product_{k>=1} (1 + k*sinh(x^k)).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =31a(4) =168a(5) =1841a(6) =18600a(7) =221845a(8) =2655408a(9) =44969041a(10) =703172880a(11) =11894018621a(12) =231354830520
External references
- oeis: A270670