a(n) = 10*a(n-1) + a(n-2), starting with a(0) = 1 and a(1) = 5.
A088320
a(n) = 10*a(n-1) + a(n-2), starting with a(0) = 1 and a(1) = 5.
Terms
- a(0) =1a(1) =5a(2) =51a(3) =515a(4) =5201a(5) =52525a(6) =530451a(7) =5357035a(8) =54100801a(9) =546365045a(10) =5517751251a(11) =55723877555a(12) =562756526801
External references
- oeis: A088320