Number of primes p in the range 9 < p <= prime(10^n) that have most significant and least significant decimal digit both equal to 9.
A145712
Number of primes p in the range 9 < p <= prime(10^n) that have most significant and least significant decimal digit both equal to 9.
Terms
- a(0) =0a(1) =0a(2) =2a(3) =245a(4) =2053a(5) =17518a(6) =153645a(7) =1362970a(8) =12244431a(9) =111153241
External references
- oeis: A145712