a(n) = 20*a(n-1) - 64*a(n-2) + 2 for n > 1; a(0) = 1, a(1) = 21.
A167032
a(n) = 20*a(n-1) - 64*a(n-2) + 2 for n > 1; a(0) = 1, a(1) = 21.
Terms
- a(0) =1a(1) =21a(2) =358a(3) =5818a(4) =93450a(5) =1496650a(6) =23952202a(7) =383258442a(8) =6132227914a(9) =98116017994
External references
- oeis: A167032