A249871 Irrational parts of the Q(sqrt(3)) integers giving the square of the radii for lattice point circles for the Archimedean tiling (3,4,6,4).

0, 0, 0, 0, 1, 0, 1, 2, 2, 3, 2, 3, 4, 4, 3, 4, 5, 4, 4, 6, 6, 6, 6, 8, 7, 8, 8, 9, 8, 8, 8, 10, 10, 11, 9, 10, 12, 10, 12, 12, 10, 12, 13, 13, 12, 14, 12, 15, 16, 15, 15, 15, 16, 18, 18, 16, 19, 18, 17, 18, 18, 20, 20, 18, 20, 18, 21, 19, 22

Offset: 0

Author

Wolfdieter Lang, Dec 06 2014

Keywords

• nonn
• easy

Comments

The corresponding rational parts are given in A249870.

The square of the radii R2(n) of lattice point circles around any lattice point of the Archimedean tiling (3,4,6,4) are integers in Q(sqrt(3)): R2(n) = A249870(n) + a(n)*sqrt(3), n >= 0. They are sorted in increasing order. For details, especially the coordinates of the lattice points, see the note given in a link under A249870.

Examples

			See A249870.
		

Crossrefs

Cf. A249870, A251627, A251628.