OFFSET

0,5

COMMENTS

The rational parts are found in A251629.

See the comments, examples and a link in A251629 for details. The squared radii R2(n) for lattice point hitting circles centered at any of the lattice points of the Archimedean tiling (4,8,8) are integers in the real quadratic number field Q(sqrt(2)), namely R2(n) = A251629(n) + a(n)*sqrt(2), n >= 0.

EXAMPLE

See A251629.

CROSSREFS

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang, Jan 02 2015

STATUS

approved