Number of primes of the form 1 + b^2 for 1 < b < 10^n.
A215047
Number of primes of the form 1 + b^2 for 1 < b < 10^n.
Terms
- a(0) =3a(1) =18a(2) =111a(3) =840a(4) =6655a(5) =54109a(6) =456361a(7) =3954180a(8) =34900212a(9) =312357933a(10) =2826683629a(11) =25814570671a(12) =237542444179
External references
- oeis: A215047