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 A334538 Perimeters of primitive Heronian triangles with squarefree side lengths. 2
 16, 36, 42, 48, 64, 78, 80, 84, 100, 112, 132, 140, 144, 150, 154, 176, 182, 186, 190, 192, 196, 198, 208, 210, 222, 228, 240, 242, 250, 256, 266, 270, 272, 276, 286, 292, 294, 304, 320, 322, 324, 330, 336, 338, 350, 356, 366, 370, 372, 378, 400, 402, 406, 410, 420 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Not the same as A330869 (this sequence excludes 108, 252, 396, ..., etc.). LINKS Eric Weisstein's World of Mathematics, Heronian Triangle Wikipedia, Heronian triangle Wikipedia, Integer Triangle EXAMPLE a(1) = 16; there is one primitive Heronian triangle with a perimeter of 16 whose side lengths are squarefree, which is [5,5,6]. a(2) = 36; there is one primitive Heronian triangle with a perimeter of 36 whose side lengths are squarefree, [10,13,13]. CROSSREFS Cf. A330869, A333840. Sequence in context: A109287 A294155 A330869 * A066112 A223456 A103843 Adjacent sequences:  A334535 A334536 A334537 * A334539 A334540 A334541 KEYWORD nonn AUTHOR Wesley Ivan Hurt, May 05 2020 STATUS approved

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Last modified January 26 11:58 EST 2022. Contains 350598 sequences. (Running on oeis4.)