E.g.f.: exp( Sum_{n>=1} H(n) * x^(2*n)/(2*n) ) where H(n) is the n-th harmonic number.

A235685

E.g.f.: exp( Sum_{n>=1} H(n) * x^(2*n)/(2*n) ) where H(n) is the n-th harmonic number.

Terms

    a(0) =1a(1) =1a(2) =12a(3) =370a(4) =21490a(5) =2012346a(6) =276603096a(7) =52410015372

External references