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

1,2

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.

Sequence in context: A338666 A325717 A291942 * A377061 A068501 A048071

Adjacent sequences: A071606 A071607 A071608 * A071610 A071611 A071612

Keyword

nonn

Author

Hugo Pfoertner, May 25 2002

Status

approved