E.g.f. A(x) satisfies A( x/(exp(4*x)*cosh(4*x)) ) = exp(3*x)*cosh(3*x).
A218308
E.g.f. A(x) satisfies A( x/(exp(4*x)*cosh(4*x)) ) = exp(3*x)*cosh(3*x).
Terms
- a(0) =1a(1) =3a(2) =42a(3) =1116a(4) =44616a(5) =2394288a(6) =161719200a(7) =13187258304
External references
- oeis: A218308