A127405 Number of points in a 2-dimensional honeycomb net covered by a circular disk of diameter n if the center of the disk is chosen to minimize the number of net points covered by the disk.

0, 2, 4, 8, 12, 20, 24, 36, 46, 56, 68, 81, 96, 116, 130, 150, 168, 190, 204, 236

Offset: 1

Author

Hugo Pfoertner, Feb 08 2007

Keywords

• more
• nonn

Comments

a(n)<= min(A127402(n),A127403(n),A127404(n)).

Links

• Hugo Pfoertner, Minimal number of points in the honeycomb lattice covered by circular disks. Illustrations.

Crossrefs

Cf. A127402, A127403, A127404, A127406. The corresponding sequences for the square lattice and hexagonal lattice are A123689 and A125851, respectively.