a(1)=1, a(n) = 11*a(n-1) + n.

Terms

a(0) =1a(1) =13a(2) =146a(3) =1610a(4) =17715a(5) =194871a(6) =2143588a(7) =23579476a(8) =259374245a(9) =2853116705a(10) =31384283766a(11) =345227121438