A251631 Irrational parts of the Q(sqrt(2)) integers giving the squared radii of the lattice point circles for the Archimedean tiling (4,8,8).

0, 0, 0, 1, 2, 2, 2, 3, 4, 4, 4, 6, 6, 7, 6, 8, 8, 8, 9, 10, 10, 11, 12, 12, 12, 12, 14, 13, 15, 14, 16, 16, 16, 18, 18, 18, 20, 20, 21, 20, 20, 21, 22, 22, 22, 24, 24, 25, 26, 24, 26, 27, 28, 26, 29, 30, 30, 31, 32, 30, 32, 31, 32, 32, 34, 32, 34

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.

Links

Table of n, a(n) for n=0..66.

Example

See A251629.

Crossrefs

Cf. A251629.

Sequence in context: A117953 A128331 A084827 * A029076 A259774 A036015

Adjacent sequences: A251628 A251629 A251630 * A251632 A251633 A251634

Keyword

nonn,easy

Author

Wolfdieter Lang, Jan 02 2015

Status

approved