-1672

Appears in sequences

• Expansion of Product_{k>=1} (1 - x^k)^22.at n=5A010828
• A triangular sequence from a Beraha type recursive polynomial using 5 X 5 centered tridiagonal matrices with chromatic polynomial central roots to its characteristic polynomial.at n=30A123969
• Let A(0) = 1, B(0) = 0 and C(0) = 0. Let A(n+1) = - Sum_{k = 0..n} binomial(n,k)*C(k), B(n+1) = Sum_{k = 0..n} binomial(n,k)*A(k) and C(n+1) = Sum_{k = 0..n} binomial(n,k)*B(k). This entry gives the sequence B(n).at n=8A143631
• Expansion of Product_{k>=1} (1 + x^(3*k))^(3*k) / (1 + x^k)^k.at n=28A285294
• a(n) = -(1/120)*n*(n - 3)*(n - 6)*(n^2 - 21*n + 8).at n=22A319931
• Expansion of Sum_{k>0} k^2 * x^k/(1 + x^k)^3.at n=43A364351