158466domain: NAppears in sequencesExpansion of (-1 + 1/(1-7*x)^7)/(49*x); related to A036226.at n=4A053110Number of ways of placing n nonattacking (normal) queens on n X n board; solutions congruent on the torus count only once.at n=14A062164Number of edges in the n^2 X n^2 Sudoku graph.at n=6A182866