A230656 Position of the circles with center at a lattice point that contain record numbers of lattice points, in the list of Loeschian numbers A003136.

1, 2, 5, 21, 34, 186, 454, 1927, 2746, 11128, 30906, 70762, 349068, 830170, 2278644, 13219495, 27373350, 87615127

Offset

0,2

Links

Table of n, a(n) for n=0..17.

Formula

a(n) = k for which A230655(n) = A003136(k).

Example

a(3) = 21 because A230655(3) = A003136(21) = 49.

Crossrefs

Cf. A003136 (Loeschian numbers), A230655, A075880 (similar sequence for square lattice)

Sequence in context: A358556 A293687 A190117 * A266950 A328689 A039777

Adjacent sequences: A230653 A230654 A230655 * A230657 A230658 A230659

Keyword

nonn,more

Author

Hugo Pfoertner, Oct 27 2013

Status

approved