281987

Appears in sequences

• Values of y such that x^2 + y^2 = 37^n with x and y coprime and 0 < x < y.at n=6A230713
• a(n) = Sum_{k=0..n} (n-i)^k * (n+i)^(n-k), where i is the imaginary unit.at n=6A387459