Semiprimes with consecutive (ascending) digits.
A215477
Semiprimes with consecutive (ascending) digits.
Terms
- a(0) =4a(1) =6a(2) =9a(3) =34a(4) =123a(5) =789a(6) =901a(7) =1234a(8) =34567a(9) =56789a(10) =901234a(11) =1234567a(12) =7890123a(13) =567890123a(14) =12345678901
External references
- oeis: A215477