A346785 Denominators of minimal squared radii of circular disks covering a record number of lattice points of the hexagonal lattice, when the centers of the circles are chosen to maximize the number of covered lattice points.
1, 4, 3, 4, 1, 4, 25, 4, 3, 4, 48, 25, 1, 27, 4, 64, 289, 27, 3, 1, 121, 16, 1, 4, 2187, 48, 3, 841, 27, 289, 4, 64, 1, 25, 64, 121, 4, 1
Offset: 1
Examples
0, 1/4, 1/3, 3/4, 1, 7/4, 49/25, 9/4, 7/3, 13/4, 169/48, 91/25, 4, 133/27, 21/4, 361/64, 1729/289, 169/27, 19/3, 7, 961/121, 133/16, 9, ...