A365620 Number of integer grid points on the circle around (0,0) with radius A088959(n).

4, 12, 20, 36, 60, 108, 180, 252, 324, 540, 756, 972, 1620, 2268, 2916, 4860, 6804, 8748, 14580, 20412, 26244, 43740, 61236, 72900, 78732, 102060, 131220, 183708, 218700, 236196, 306180, 393660, 551124, 656100, 708588, 918540

Offset

1,1

Links

Table of n, a(n) for n=1..36.

Formula

a(n) = 8*A088111(n) + 4.

Crossrefs

Sequence of records of A046109 (first term 1 from A046109 is omitted).

See A071385 for radii that are not necessarily integers.

Sequence in context: A301107 A301205 A301229 * A301011 A034696 A301221

Adjacent sequences: A365617 A365618 A365619 * A365621 A365622 A365623

Keyword

nonn

Author

Günter Rote, Sep 12 2023

Status

approved