A071609 Squared radii of the spheres around (0,0,0) that contain record numbers of lattice points.

1, 2, 5, 9, 14, 26, 41, 74, 89, 101, 146, 194, 269, 314, 341, 446, 614, 626, 689, 794, 854, 941, 1106, 1109, 1154, 1286, 1361, 1634, 1781, 1889, 2141, 2609, 2966, 3134, 3401, 3449, 3506, 4241, 4289, 4826, 5381, 5561, 6254, 7229, 7829, 8069, 8126

Offset: 1

Author

Hugo Pfoertner, May 25 2002

Keywords

• nonn

Comments

The number of lattice points (i,j,k) on the sphere around (0,0,0) with i^2 + j^2 + k^2 = a(n) is given by A071611(n).

Indices of records in A005875. - Daniel Suteu, Aug 13 2021

Links

• Hugo Pfoertner, Table of n, a(n) for n = 1..189

Crossrefs

Cf. A005875, A071342, A071343, A071344, A071610, A071611.