2022735

Appears in sequences

• Coefficients of the nonnegative powers of rho(11) = 2*cos(Pi/11) when written in the power basis of the degree 5 number field Q(rho(11)). Coefficients of the third power.at n=23A231185
• Expansion of (1 - 2*x)/(1 - 9*x + 28*x^2 - 35*x^3 + 15*x^4 - x^5).at n=10A370391
• a(n) = (1/(2*n+1)) * Sum_{k=0..n} (k+1)^3 * (2*k+1) * binomial(3*n-k,n-k).at n=8A390969