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A364109
a(n) is the lesser coefficient of the pair (x, y) such that (x^2-y^2)/r, 2*x*y/r, (x^2+y^2)/r are the 2 legs and hypotenuse of the least Pythagorean triple having area A006991(n).
3
4, 1, 9, 36, 1, 1, 3, 49, 17689, 4900, 2, 81, 8, 1764, 289, 12, 16, 49, 2289169, 1158313156, 44, 10227204, 22801, 4, 169, 2, 121, 2809, 1, 166952241, 36, 49, 169, 75, 529, 76, 3975302500, 1, 7551929273974569, 1764, 1, 12, 19298449, 25, 305111826865145547009, 143811, 14161, 3136, 1, 1
OFFSET
1,1
LINKS
Mauro Fiorentini, Numeri congruenti minori di 1000. See column b.
David Goldberg, Triangle Sides for Congruent Numbers less than 10,000, arXiv:2106.07373 [math.NT], 2021. See column Q, p. 7.
Hisanori Mishima, Congruum. See column n.
CROSSREFS
Cf. A006991 (primitive congruent numbers), A364108 (x), A364110 (r).
Sequence in context: A128626 A193963 A028941 * A348180 A176080 A328302
KEYWORD
nonn
AUTHOR
Michel Marcus, Jul 05 2023
STATUS
approved