a(n) is the smallest prime(m) such that the interval (prime(m)*n, prime(m+1)*n) contains exactly two primes.

A187809

a(n) is the smallest prime(m) such that the interval (prime(m)*n, prime(m+1)*n) contains exactly two primes.

Terms

    a(0) =5a(1) =3a(2) =17a(3) =2a(4) =2a(5) =2a(6) =41a(7) =2a(8) =2a(9) =29a(10) =2a(11) =107a(12) =137a(13) =191a(14) =179a(15) =599a(16) =239a(17) =281a(18) =857a(19) =1427a(20) =641a(21) =809a(22) =1061a(23) =857a(24) =1481a(25) =1049a(26) =1451a(27) =1229a(28) =1019a(29) =1151

External references