109870575

Appears in sequences

• Expansion of g.f. x/((1-x)*(1-3*x+2*x^2-x^3)).at n=21A137229
• a(1) = greatest k such that H(k) - H(8) < H(8) - H(4); a(2) = greatest k such that H(k) - H(a(1)) < H(a(1)) - H(8), and for n > 2, a(n) = greatest k such that H(k) - H(a(n-1)) > H(a(n-1)) - H(a(n-2)), where H = harmonic number.at n=28A227804