379037

Appears in sequences

• Number of positive integers <= 2^n of form x^2 + 16*y^2.at n=22A000018
• Coefficients in the power series A(x) such that: x*A(x) = Sum_{n=-oo..+oo} (-1)^n * x^(n*(n+1)) * A(x)^n.at n=11A357221