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

A066998

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

Terms

    a(0) =0a(1) =1a(2) =5a(3) =46a(4) =737a(5) =18426a(6) =663337a(7) =32503514a(8) =2080224897a(9) =168498216658

External references