40211

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 29 ones.at n=18A031797
• Row sums of A139621, number of connected directed multigraphs with loops and no vertex of degree 0, with n arcs.at n=7A137975
• Numbers that can be written in more than 1 way as p^2 + 3pq + q^2 with primes p < q.at n=16A218795