|
|
A333840
|
|
Perimeters of Heronian triangles with squarefree area.
|
|
5
|
|
|
12, 30, 42, 44, 70, 76, 84, 100, 110, 132, 140, 150, 154, 156, 172, 182, 186, 196, 204, 220, 228, 230, 236, 238, 242, 252, 260, 268, 294, 300, 308, 318, 322, 330, 340, 350, 364, 372, 374, 380, 390, 396, 420, 428, 444, 462, 468, 470, 476, 484, 490, 492, 494, 506, 510
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
EXAMPLE
|
a(1) = 12; there is one Heronian triangle with perimeter 12 whose area is squarefree, which is [3,4,5] with area 6.
a(2) = 30; there is one Heronian triangle with a perimeter of 30 whose area is squarefree, which is [5,12,13] with area 30.
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|