-2387

Appears in sequences

• Expansion of x^2*(-1+x+x^2)/(-1+x+x^2-x^3+x^5).at n=28A107332
• Expansion of 8 * eta(q)^7 / eta(q^7) + 49 * (eta(q) * eta(q^7))^3 in powers of q.at n=16A138809
• a(n) = 7 + 12*n - 6*n^2.at n=21A157517
• Expansion of exp( Sum_{n>=1} -sigma(6*n)*x^n/n ) in powers of x.at n=41A283164