Recurrence a(n+2) = Sum_{k=0..n} binomial(n,k)*a(k)*a(n+1-k) with a(0)=2, a(1)=-1.
A289065
Recurrence a(n+2) = Sum_{k=0..n} binomial(n,k)*a(k)*a(n+1-k) with a(0)=2, a(1)=-1.
Terms
- a(0) =2a(1) =-1a(2) =-2a(3) =-3a(4) =0a(5) =24a(6) =108a(7) =162a(8) =-1440a(9) =-14256a(10) =-54432a(11) =177552a(12) =4432320a(13) =31796064a(14) =10520928a(15) =-2531636208a(16) =-31078494720a(17) =-119133110016
External references
- oeis: A289065