21366
domain: N
Appears in sequences
- Convolution of composite numbers and odd numbers.at n=32A023650
- Poincaré series [or Poincare series] P(C_{6,2}; x).at n=13A124614
- Number of line segments connecting exactly 10 points in an n x n grid of points.at n=47A177726
- Number of ascent sequences of length n with exactly nine descents.at n=1A241879
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 54", based on the 5-celled von Neumann neighborhood.at n=38A270024
- Number of noncrossing trees with n edges and all nodes having degree at most 3.at n=8A378078
- Index where n first appears in A381658.at n=58A381659