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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.
7
0, 2, 4, 8, 12, 20, 24, 36, 46, 56, 68, 81, 96, 116, 130, 150, 168, 190, 204, 236
OFFSET
1,2
COMMENTS
a(n)<= min(A127402(n),A127403(n),A127404(n)).
CROSSREFS
Cf. A127402, A127403, A127404, A127406. The corresponding sequences for the square lattice and hexagonal lattice are A123689 and A125851, respectively.
Sequence in context: A037168 A049696 A206350 * A344932 A136034 A243112
KEYWORD
more,nonn
AUTHOR
Hugo Pfoertner, Feb 08 2007
STATUS
approved