a(n) is the number of pairs of twin primes p and p+2 both less than or equal to 10^n such that p is congruent to 1 modulo 4.
A369109
a(n) is the number of pairs of twin primes p and p+2 both less than or equal to 10^n such that p is congruent to 1 modulo 4.
Terms
- a(0) =1a(1) =4a(2) =19a(3) =105a(4) =604a(5) =4046a(6) =29482a(7) =220419a(8) =1712731a(9) =13706592a(10) =112196635a(11) =935286453
External references
- oeis: A369109