-2827

Appears in sequences

• a(n) = n^2 - (n-1)^2 - (n-2)^2 - ... - 1^2.at n=21A179297
• Expansion of Sum_{k>=1} mu(k)*log((theta_3(x^k) + 1)/2)/k, where theta_3() is the Jacobi theta function.at n=48A308297