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A177887
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The areas of Pythagorean triangles divided by 6.
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0
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1, 4, 5, 9, 10, 14, 16, 20, 25, 30, 35, 36, 40, 45, 49, 55, 56, 64, 80, 81, 84, 90, 91, 100, 105, 120, 121, 125, 126, 140, 144, 154, 160, 165, 169, 180, 196, 204, 220, 224, 225, 231, 245, 250, 256, 260, 270, 285, 286, 289, 315, 320, 324, 336, 350, 360, 361, 364, 385, 390
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OFFSET
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1,2
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COMMENTS
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Number of terms less than 10^k: 4, 23, 109, 462, 1861, 7255, 27042, 95703, 314534, ..., .
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REFERENCES
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Albert H. Beiler, Recreations in the Theory of Numbers, The Queen of Mathematics Entertains, 2nd Ed., Chpt. XIV, "The Eternal Triangle", pp. 104-134, Dover Publ., NY, 1964.
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LINKS
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FORMULA
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MATHEMATICA
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(* First run the program given for A009112 *) Union[t/6]
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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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