a(n) = 20*a(n-1) - 64*a(n-2) + 1 for n > 1; a(0) = 1, a(1) = 20.
A167031
a(n) = 20*a(n-1) - 64*a(n-2) + 1 for n > 1; a(0) = 1, a(1) = 20.
Terms
- a(0) =1a(1) =20a(2) =337a(3) =5461a(4) =87653a(5) =1403557a(6) =22461349a(7) =359399333a(8) =5750460325a(9) =92007649189
External references
- oeis: A167031