Bases b in which the increasing concatenation of all primes smaller than b forms a prime number.
A217040
Bases b in which the increasing concatenation of all primes smaller than b forms a prime number.
Terms
- a(0) =3a(1) =4a(2) =5a(3) =9a(4) =10a(5) =15a(6) =244a(7) =676a(8) =14870a(9) =23526a(10) =35732a(11) =47133a(12) =66878
External references
- oeis: A217040