E.g.f.: Sum_{n>=1} tanh(n*x)^n = Sum_{n>=1} a(n)*4^(n-1)*x^n/n!.
A195415
E.g.f.: Sum_{n>=1} tanh(n*x)^n = Sum_{n>=1} a(n)*4^(n-1)*x^n/n!.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =92a(4) =1351a(5) =28982a(6) =855100a(7) =33214232a(8) =1642999501a(9) =100843185962
External references
- oeis: A195415