(2*n+1)*a(n+1) = (4*n^2+1)*a(n) + (2*n+1)*a(n-1) with n>1, a(0)=2, a(1)=-1.
A231622
(2*n+1)*a(n+1) = (4*n^2+1)*a(n) + (2*n+1)*a(n-1) with n>1, a(0)=2, a(1)=-1.
Terms
- a(0) =2a(1) =-1a(2) =1a(3) =4a(4) =31a(5) =293a(6) =3326a(7) =44189a(8) =673471a(9) =11588884a(10) =222304897a(11) =4704612119a(12) =108897613826
External references
- oeis: A231622