40725

Appears in sequences

• Triangle read by rows: d(n,k) = number of decreasing labeled trees with n nodes and largest leaf <= k, for 1 <= k <= n.at n=32A079268
• Given the infinite continued fraction (1+i)+((1+i)/(1+i)+((1+i)/((1+i)+...)))), where i is the square root of (-1), this is the denominator of the convergents.at n=14A093727
• Poincaré series [or Poincare series] P(C#_{3,2}; x).at n=33A124630
• Start of n consecutive indices k such that phi(k) contains distinct number of divisors.at n=16A193901
• a(0) = 1; a(n) = Sum_{k=0..floor(n/3)} binomial(n,3*k) * a(k).at n=16A351970