Number of Sophie Germain primes of the form 4k + 1 less than 10^n.
A307176
Number of Sophie Germain primes of the form 4k + 1 less than 10^n.
Terms
- a(0) =1a(1) =5a(2) =17a(3) =89a(4) =589a(5) =3833a(6) =27940a(7) =211439a(8) =1653257a(9) =13283194a(10) =109058142a(11) =911411528a(12) =7731354496
External references
- oeis: A307176