Number of primes p in the range 9 < p <= prime(10^n) that have most significant and least significant decimal digit both equal to 7.
A145711
Number of primes p in the range 9 < p <= prime(10^n) that have most significant and least significant decimal digit both equal to 7.
Terms
- a(0) =0a(1) =0a(2) =32a(3) =264a(4) =2103a(5) =17891a(6) =155956a(7) =1379175a(8) =12374435a(9) =112213301
External references
- oeis: A145711