20948

Appears in sequences

• Expansion of e.g.f.: log((-1+x)/(-1+2*x))^2.at n=6A052883
• Indices of the start of 10 successive distinct digits in the decimal expansion of e (2.718281828...).at n=16A258166
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 489", based on the 5-celled von Neumann neighborhood.at n=30A272512
• Number of subsets of {1..n} whose harmonic mean is an integer.at n=39A339453