(2*16^(5^n) + (10^n)/2 - 1) mod 10^n: a sequence of trimorphic numbers ending (for n > 1) in 1.
A224476
(2*16^(5^n) + (10^n)/2 - 1) mod 10^n: a sequence of trimorphic numbers ending (for n > 1) in 1.
Terms
- a(0) =6a(1) =1a(2) =251a(3) =3751a(4) =68751a(5) =718751a(6) =9218751a(7) =24218751a(8) =74218751a(9) =8574218751a(10) =13574218751a(11) =663574218751
External references
- oeis: A224476