a(n) is the least x such that the n values x+0, x+6, x+12, ..., x+6*(n-1) are all products of exactly two primes (i.e., semiprimes).

A091016

a(n) is the least x such that the n values x+0, x+6, x+12, ..., x+6*(n-1) are all products of exactly two primes (i.e., semiprimes).

Terms

    a(0) =4a(1) =4a(2) =9a(3) =203a(4) =1333a(5) =1333a(6) =1333a(7) =2159a(8) =8309a(9) =18799a(10) =60499a(11) =60499a(12) =186779a(13) =186779a(14) =186779a(15) =12015573923a(16) =12015573923

External references