68498

Appears in sequences

• Least k such that the difference between consecutive semiprimes A065516(k) equals n, or 0 if no such k exists.at n=28A123375
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 569", based on the 5-celled von Neumann neighborhood.at n=39A272993
• a(0) = 0, and for n > 0, (a(n)) gives the indices n for which d(n) > d(k) for k < n, where d is the difference sequence of (cos k + sin k).at n=26A299639
• Expansion of (1/x) * Series_Reversion( x * (1 - x^3 * (1 + x)^3) / (1 + x) ).at n=11A389441