a(n) = 20*a(n-1) - 64*a(n-2) - 45 for n>1; a(0) = 399, a(1) = 5695.
A166915
a(n) = 20*a(n-1) - 64*a(n-2) - 45 for n>1; a(0) = 399, a(1) = 5695.
Terms
- a(0) =399a(1) =5695a(2) =88319a(3) =1401855a(4) =22384639a(5) =357974015a(6) =5726863359a(7) =91626930175
External references
- oeis: A166915