E.g.f.: exp(Sum_{n>=1} A010815(n)*x^n).

Terms

a(0) =1a(1) =-1a(2) =-1a(3) =5a(4) =1a(5) =79a(6) =-689a(7) =2981a(8) =-7615a(9) =-172801a(10) =3621151a(11) =-16469531a(12) =-240199871a(13) =2722511375a(14) =51840080111