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A334586
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Perimeters of primitive Heronian triangles whose middle side length is prime.
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2
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16, 18, 32, 36, 44, 48, 50, 54, 64, 72, 90, 96, 98, 100, 108, 112, 128, 130, 132, 140, 144, 150, 154, 160, 162, 170, 172, 192, 196, 200, 204, 210, 224, 240, 242, 248, 250, 256, 270, 286, 290, 294, 300, 306, 318, 320, 322, 324, 336, 338, 350, 352, 356, 364, 378, 380
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OFFSET
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1,1
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LINKS
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EXAMPLE
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a(1) = 16; there is one primitive Heronian triangle with a perimeter of 16 whose middle side length is prime, which is [5,5,6].
a(3) = 32; there is one primitive Heronian triangle with a perimeter of 32 whose middle side length is prime, [4,13,15].
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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