Total number of 2's digits in primes less than 10^n.
A231591
Total number of 2's digits in primes less than 10^n.
Terms
- a(0) =1a(1) =3a(2) =32a(3) =391a(4) =3906a(5) =39572a(6) =400626a(7) =4047829a(8) =40794211a(9) =410514052a(10) =4126066282a(11) =41436122092a(12) =415853103290
External references
- oeis: A231591