n*a(n+1) = (2*n^2+2n-1)*a(n)+(n+1)*a(n-1); a(0)=0, a(1)=1.

A259904

n*a(n+1) = (2*n^2+2n-1)*a(n)+(n+1)*a(n-1); a(0)=0, a(1)=1.

Terms

    a(0) =0a(1) =1a(2) =3a(3) =18a(4) =142a(5) =1407a(6) =16773a(7) =233668a(8) =3724476a(9) =66837885a(10) =1333469575a(11) =29276505366a(12) =701429322378

External references