a(n) = 6*a(n-1)-a(n-2) for n > 2; a(1) = 13, a(2) = 53.
A156156
a(n) = 6*a(n-1)-a(n-2) for n > 2; a(1) = 13, a(2) = 53.
Terms
- a(0) =13a(1) =53a(2) =305a(3) =1777a(4) =10357a(5) =60365a(6) =351833a(7) =2050633a(8) =11951965a(9) =69661157a(10) =406014977a(11) =2366428705a(12) =13792557253a(13) =80388914813a(14) =468540931625
External references
- oeis: A156156