131688

Appears in sequences

• Number of positive integers <= 2^n of form x^2 + 8 y^2.at n=20A054152
• a(n) = A306898(n)/2.at n=17A306905
• Expansion of g.f. A(x) satisfying A(x) = Series_Reversion(x - x^3*A'(x)^2).at n=5A361047