a(n) = 10*a(n-1)-a(n-2)-4 with a(1)=1 and a(2)=3.
A171640
a(n) = 10*a(n-1)-a(n-2)-4 with a(1)=1 and a(2)=3.
Terms
- a(0) =1a(1) =3a(2) =25a(3) =243a(4) =2401a(5) =23763a(6) =235225a(7) =2328483a(8) =23049601a(9) =228167523a(10) =2258625625a(11) =22358088723a(12) =221322261601
External references
- oeis: A171640