... illeszkedik az origó középpontú, [i]r[/i] sugarú, zárt körlapra, ha [i]r [/i]pozitív egész szám?

[url=https://oeis.org/A000328]https://oeis.org/A000328[/url][br]5, 13, 29, 49, 81, 113, 149, 197, 253, 317, 377, 441, 529, 613, 709,[br] 797, 901, 1009, 1129, 1257, 1373, 1517, 1653, 1793, 1961, 2121, 2289, [br]2453, 2629, 2821, 3001, 3209, 3409, 3625, 3853, 4053, 4293, 4513, 4777, [br]5025, 5261, 5525, 5789, 6077, 6361, 6625, ...

[url=https://www.geogebra.org/m/dkuepnkq]https://www.geogebra.org/m/dkuepnkq[/url]

[url=https://www.geogebra.org/m/sdfb9ggb]https://www.geogebra.org/m/sdfb9ggb[/url]