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

Author

Günter Rote, Sep 12 2023

Keywords

• nonn

Crossrefs

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

See A071385 for radii that are not necessarily integers.

Formula

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