E.g.f.: 1/(1-x) * Product_{k>0} (1 + sinh(x^k/k)).
A270597
E.g.f.: 1/(1-x) * Product_{k>0} (1 + sinh(x^k/k)).
Terms
- a(0) =1a(1) =2a(2) =5a(3) =21a(4) =98a(5) =575a(6) =3979a(7) =31304a(8) =277248a(9) =2739141a(10) =29898743a(11) =355083014a(12) =4584190984a(13) =63680965127a(14) =949202526375
External references
- oeis: A270597