Expansion of e.g.f. Sum_{k>=0} exp(4^k * x) * x^k/k!.
A355440
Expansion of e.g.f. Sum_{k>=0} exp(4^k * x) * x^k/k!.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =98a(4) =2050a(5) =84482a(6) =7221250a(7) =1218502658a(8) =421846581250
External references
- oeis: A355440