Harriot, Thomas, Mss. 6782

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                <emph style="bf">Commentary:</emph>
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              <s xml:space="preserve"> On this folio Harriot appears to be searching a formula for the sequence 1, 7, 27, 77, ... of sums of sums of square-pyramidal numbers (see Add MS 6782
                <ref target="http://echo.mpiwg-berlin.mpg.de/ECHOdocuView?url=/permanent/library/HSPGZ0AE&start=300&viewMode=image&pn=309"> f. </ref>
              ), or rather, for those numbers multiplied by 120, that is, 120, 840, 3240, .... For this he needs polynomials of the fifth degree. </s>
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