256901

Properties

Appears in sequences

• Number of polyhexes with n cells that tile the plane by translation but not by 180-degree rotation (Conway criterion).at n=17A075208
• Number of (4*n)X4 binary arrays with rows in nonincreasing order, n ones in every column and no more than 3 ones in any row.at n=7A188411
• Number of (8*n)Xn binary arrays with rows in nonincreasing order, 8 ones in every column and no more than 3 ones in any row.at n=3A188423
• Prime numbersat n=22591