The number of unitary untouchable numbers <= 10^n.
A290240
The number of unitary untouchable numbers <= 10^n.
Terms
- a(0) =5a(1) =5a(2) =9a(3) =75a(4) =862a(5) =9903a(6) =101030a(7) =1028263
External references
- oeis: A290240
A290240
The number of unitary untouchable numbers <= 10^n.