Expansion of e.g.f. S(x) satisfying S(x) = sinh( x*cosh( 2*x*sqrt(1 + S(x)^2) ) ), where a(n) is the coefficient of x^(2*n+1)/(2*n+1)! in S(x) for n >= 0.
A372812
Expansion of e.g.f. S(x) satisfying S(x) = sinh( x*cosh( 2*x*sqrt(1 + S(x)^2) ) ), where a(n) is the coefficient of x^(2*n+1)/(2*n+1)! in S(x) for n >= 0.
Terms
- a(0) =1a(1) =13a(2) =441a(3) =68069a(4) =15591025a(5) =6212017725
External references
- oeis: A372812