68364

Appears in sequences

• Number of distinct solutions of sum{i=1..4}(x(2i-1)*x(2i)) = 0 (mod n), with x() only in 2..n-2.at n=13A180816
• Number of right triangles on a centered hexagonal grid of size n.at n=8A241225
• Coefficients in the power series A(x) such that: A(x)^2 = Sum_{n=-oo..+oo} x^(3*n+2) * (1 - x^(n-1))^(n+1) * A(x)^n.at n=7A357162