1144836

Appears in sequences

• Number of 3 X 3 matrices with entries mod n, up to row and column permutation.at n=6A058001
• Let P be a one-move "rider" with move set M={(1,2)}; a(n) is the number of non-attacking positions of three indistinguishable pieces P on an n X n board.at n=13A222309
• Number of inequivalent n X n matrices with entries from [7], where equivalence means permutations of rows or columns.at n=3A246113