Euclid numbers (A006862) of the form 3*(i*i + i*j + j*j + i + j) + 1 where i and j are integers.

A261558

Euclid numbers (A006862) of the form 3*(i*i + i*j + j*j + i + j) + 1 where i and j are integers.

Terms

    a(0) =7a(1) =31a(2) =211a(3) =2311a(4) =510511a(5) =6469693231a(6) =200560490131

External references