4284900

Appears in sequences

• Coefficients of power series A(x) consist entirely of squares, where A(x) = A083352(x)^2 + A083352(x) - 1.at n=51A083353
• Numbers k such that sigma(k) - 3k is prime.at n=27A306492
• a(n) is the smallest nonnegative integer k where exactly n pairs of positive integers (x, y) exist such that x^2 + 11*y^2 = k.at n=22A374160