254587domain: NAppears in sequencesNumber of regular octahedra that can be formed using the points in an (n+1)X(n+1)X(n+1) lattice cube.at n=25A178797Odd numbers m such that for all 2^k < m the numbers m + 2^k, m - 2^k, m*2^k + 1, and m*2^k - 1 are composite, with k >= 1.at n=34A256163