(16^(5^n) + (10^n)/2 - 1) mod 10^n: a sequence of trimorphic numbers ending (for n > 1) in 5.
A224478
(16^(5^n) + (10^n)/2 - 1) mod 10^n: a sequence of trimorphic numbers ending (for n > 1) in 5.
Terms
- a(0) =0a(1) =25a(2) =875a(3) =4375a(4) =59375a(5) =609375a(6) =2109375a(7) =37109375a(8) =287109375a(9) =6787109375a(10) =31787109375a(11) =581787109375
External references
- oeis: A224478