19882681

Appears in sequences

• a(n) = A073145(n)^2.at n=27A073702
• Numbers of the form (7^i)*(13^j).at n=36A108056
• Smallest m such that m can be written in exactly n ways as x^2 + xy + y^2 with 0 <= x <= y.at n=11A198799
• Smallest k such that circle centered at the origin and with radius sqrt(k) passes through exactly 6*n integer points in the hexagonal lattice (see A004016).at n=20A343771