a(n)=x is the least prime with pi(x,4,3) - pi(x,4,1) = 1-n where pi(x,4,k) is the number of primes 4*j + k <= x.
A349519
a(n)=x is the least prime with pi(x,4,3) - pi(x,4,1) = 1-n where pi(x,4,k) is the number of primes 4*j + k <= x.
Terms
- a(0) =2a(1) =26861a(2) =616897a(3) =616909a(4) =616933a(5) =623641a(6) =623653a(7) =623669a(8) =623681a(9) =12315529a(10) =12315581a(11) =12315613a(12) =12315617a(13) =12362653a(14) =12362657a(15) =12362717a(16) =12362741a(17) =12362981a(18) =12362989a(19) =12365033a(20) =12365057a(21) =12365153a(22) =12365173a(23) =12365201a(24) =12366589a(25) =951821281
External references
- oeis: A349519