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

Terms

a(0) =1a(1) =2a(2) =4a(3) =14a(4) =54a(5) =292a(6) =1696a(7) =12500a(8) =97300a(9) =909800a(10) =8888400a(11) =100778200a(12) =1185163000a(13) =15798002000a(14) =217275712000