Least number k for which primepi(prime(k+1)/2) - primepi(prime(k)/2) = n.

A215237

Least number k for which primepi(prime(k+1)/2) - primepi(prime(k)/2) = n.

Terms

    a(0) =1a(1) =2a(2) =30a(3) =259a(4) =429a(5) =4612a(6) =26466a(7) =88110a(8) =31545a(9) =104071a(10) =2775456a(11) =14614604a(12) =15793779a(13) =164082567a(14) =476853784a(15) =495207013a(16) =3613011290a(17) =9032608100a(18) =69827848342

External references