-8840

Appears in sequences

• Triangle of (Gaussian) q-binomial coefficients for q=-21.at n=11A015146
• Triangle of (Gaussian) q-binomial coefficients for q=-21.at n=13A015146
• Triangle read by rows: T(n,k) = T(n-k,k-1) - 2*T(n-k,k) + T(n-k,k+1) with T(0,0) = 1 for 0 <= k <= A003056(n).at n=62A291940
• Consider primitive pairs of integers (b, c) with b < 0 such that x^5 + b*x + c = 0 is irreducible and solvable by radicals: sequence gives values of b.at n=17A371557
• Consider primitive pairs of integers (b, c) with b < 0 such that x^5 + b*x + c = 0 is irreducible and solvable by radicals: sequence gives values of b.at n=18A371557