-1674

Appears in sequences

• Expansion of (1-x)^(-1)/(1-2*x+x^2+x^3).at n=33A077856
• Riordan array (1/(1+x), x*(1-2*x)/(1+x)^2).at n=47A110522
• Triangle of coefficients of Faber polynomials for (3*x - sqrt(x^2 - 4*x))/2.at n=46A226952
• Difference between sums of quadratic residues and non-residues modulo n that are coprime to n.at n=92A255643
• Fourier coefficients of the modular form (1/t_{6a}^3) * (1-6*sqrt(-3)/t_{6a}) * F_{6a}^12.at n=6A341568