a(n) = 20*a(n-1) - 64*a(n-2) + 2 for n > 2; a(0) = 1, a(1) = 22, a(2) = 377.
A167121
a(n) = 20*a(n-1) - 64*a(n-2) + 2 for n > 2; a(0) = 1, a(1) = 22, a(2) = 377.
Terms
- a(0) =1a(1) =22a(2) =377a(3) =6134a(4) =98554a(5) =1578506a(6) =25262666a(7) =404228938a(8) =6467768138a(9) =103484710730
External references
- oeis: A167121