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A335101
Perimeters of Heronian triangles whose middle side length is a square.
4
12, 48, 54, 60, 64, 66, 68, 70, 80, 90, 98, 108, 192, 216, 220, 240, 242, 252, 256, 264, 270, 272, 280, 288, 294, 300, 306, 320, 328, 330, 336, 350, 360, 364, 380, 392, 396, 400, 410, 416, 432, 442, 450, 468, 486, 488, 490, 494, 500, 512, 522, 528, 530, 540, 546, 572, 576
OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Heronian Triangle
Wikipedia, Integer Triangle
EXAMPLE
a(1) = 12; there is one Heronian triangle with a perimeter of 12 whose middle side length is a square, which is [3,4,5].
CROSSREFS
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, May 23 2020
STATUS
approved