E.g.f.: exp(Sum_{n>=1} A000593(n) * x^n).

A294394

E.g.f.: exp(Sum_{n>=1} A000593(n) * x^n).

Terms

    a(0) =1a(1) =1a(2) =3a(3) =31a(4) =145a(5) =1641a(6) =17731a(7) =194503a(8) =2676801a(9) =40644145a(10) =667689571a(11) =11514903951a(12) =227665389073

External references