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

1,2

Links

Table of n, a(n) for n=1..38.

Example

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, ...

Crossrefs

Corresponding numerators are A346784.

Cf. A125852, A346126.

Sequence in context: A143505 A245727 A280822 * A284517 A286953 A170987

Adjacent sequences: A346782 A346783 A346784 * A346786 A346787 A346788

Keyword

nonn,frac,more

Author

Hugo Pfoertner, Aug 08 2021

Status

approved