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

Author

Hugo Pfoertner, Oct 27 2013

Keywords

• nonn
• more

Examples

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

Crossrefs

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

Formula

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