Recurrence: Sum_{n>=0} a(n-k)*a(k) = (n+1)!^2/2^n.

A184359

Recurrence: Sum_{n>=0} a(n-k)*a(k) = (n+1)!^2/2^n.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =32a(4) =410a(5) =7562a(6) =188736a(7) =6118296a(8) =249991926a(9) =12575954918a(10) =764125698224

External references