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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. 2
1, 2, 5, 21, 34, 186, 454, 1927, 2746, 11128, 30906, 70762, 349068, 830170, 2278644, 13219495, 27373350, 87615127 (list; graph; refs; listen; history; text; internal format)
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: A240147 A293687 A190117 * A266950 A328689 A039777

Adjacent sequences:  A230653 A230654 A230655 * A230657 A230658 A230659

KEYWORD

nonn,more

AUTHOR

Hugo Pfoertner, Oct 27 2013

STATUS

approved

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Last modified June 13 00:57 EDT 2021. Contains 344980 sequences. (Running on oeis4.)