-6174

Appears in sequences

• a(n) = (-1)^n*n*(n+1)*(2*n-5)/6.at n=26A167386
• Expansion of (1+4*x+x^2) / ((1-x)^3*(1+x)^4).at n=52A229834
• Expansion of Sum_{k>=1} x^k/(1 + x^k)^4.at n=33A320901