64288
domain: N
Appears in sequences
- Structured octagonal prism numbers.at n=27A100176
- We consider how many ways there are of coloring a square grid, n X n, using just two colors, black & white say. If the resulting grid has rotational symmetry of order two only, then the number of different grids is given by this sequence. None of these counted are the images of any of the others under a reflection or a rotation of 90 degrees. If one wishes to count these as different, then each of these numbers can be multiplied by 4.at n=5A140795
- Sum of the numerators for computing the fourth moment of the probability mass function for the number of involutions with k 2-cycles in n elements (A000085) assuming equal likelihood.at n=7A174782
- Number of 4-step king's tours on an n X n board summed over all starting positions.at n=14A186863
- The constant for the smallest n X n associative magic square which consists of Smith numbers.at n=4A189121
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 565", based on the 5-celled von Neumann neighborhood.at n=38A272945
- Number of compositions of n whose run-lengths are not unimodal.at n=18A332727
- Numbers k >= 1 such that A018804(k) divided by A000203(k) is an integer.at n=27A349726
- Numbers k that divide the k-th Franel number.at n=34A372940