Expansion of e.g.f. exp(g^4 - 1), where g = 1+x*g^2 is the g.f. of A000108.
A391544
Expansion of e.g.f. exp(g^4 - 1), where g = 1+x*g^2 is the g.f. of A000108.
Terms
- a(0) =1a(1) =4a(2) =44a(3) =688a(4) =13864a(5) =340544a(6) =9841216a(7) =326498176a(8) =12214596032a(9) =508259328256
External references
- oeis: A391544