a(0) = 10; for n>0, a(n) = n*a(n-1)-n-2.

Terms

a(0) =10a(1) =7a(2) =10a(3) =25a(4) =94a(5) =463a(6) =2770a(7) =19381a(8) =155038a(9) =1395331a(10) =13953298a(11) =153486265a(12) =1841835166a(13) =23943857143a(14) =335213999986