Recurrence a(n+2) = Sum_{k=0..n} binomial(n,k)*a(k)*a(n+1-k) with a(0)=1, a(1)=-2.
A289068
Recurrence a(n+2) = Sum_{k=0..n} binomial(n,k)*a(k)*a(n+1-k) with a(0)=1, a(1)=-2.
Terms
- a(0) =1a(1) =-2a(2) =-2a(3) =2a(4) =14a(5) =10a(6) =-170a(7) =-670a(8) =2270a(9) =30490a(10) =26950a(11) =-1435150a(12) =-8513650a(13) =59564650a(14) =1050090550a(15) =486517250a(16) =-113618013250a(17) =-831340535750
External references
- oeis: A289068