A335243 - OEIS

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A335243

Perimeters of Heronian triangles whose smallest and middle side lengths are squarefree.

16, 18, 32, 36, 42, 44, 48, 50, 54, 64, 78, 80, 84, 88, 90, 96, 98, 100, 108, 112, 126, 128, 130, 132, 140, 144, 150, 154, 162, 170, 172, 176, 180, 182, 186, 190, 192, 196, 198, 200, 204, 208, 210, 216, 220, 222, 224, 228, 230, 232, 234, 238, 240, 242, 248, 250, 252, 256

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..58.

Eric Weisstein's World of Mathematics, Heronian Triangle

Wikipedia, Heronian triangle

Wikipedia, Integer Triangle

CROSSREFS

Cf. A008683 (Möbius function), A333840 (Perimeters of Heronian triangles with squarefree area).

Perimeters of squarefree Heronian triangles: A330869 (all sides), A335222 (shortest side), A335223 (middle side), A335224 (largest side), this sequence (smallest and middle), A335244 (smallest and largest), A335246 (middle and largest).

Sequence in context: A032401 A335223 A334453 * A334586 A333917 A335248

Adjacent sequences: A335240 A335241 A335242 * A335244 A335245 A335246

KEYWORD

nonn

AUTHOR

Wesley Ivan Hurt, May 28 2020

STATUS

approved