a(0) = 1, a(1)= 2, a(n) = (a(n+1) - a(n-1))/n, or a(n+1) = n*a(n) + a(n-1).

A093858

a(0) = 1, a(1)= 2, a(n) = (a(n+1) - a(n-1))/n, or a(n+1) = n*a(n) + a(n-1).

Terms

    a(0) =1a(1) =2a(2) =3a(3) =8a(4) =27a(5) =116a(6) =607a(7) =3758a(8) =26913a(9) =219062a(10) =1998471a(11) =20203772a(12) =224239963a(13) =2711083328a(14) =35468323227a(15) =499267608506

External references