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72, 70, 66, 60, 52, 42, 30, 16, 0, -18, -38, -60, -84, -110, -138, -168, -200, -234, -270, -308, -348, -390, -434, -480, -528, -578, -630, -684, -740, -798, -858, -920, -984, -1050, -1118, -1188, -1260, -1334, -1410, -1488, -1568, -1650, -1734, -1820, -1908, -1998, -2090, -2184, -2280, -2378, -2478, -2580, -2684, -2790
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| An example of the sequence of the difference of pronics. This is analogous to the difference of squares. Start at a pronic (72 in this case) and subtract successive pronics.
This is useful in finding prime numbers. As one varies the initial pronic all the even numbers are generated.
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EXAMPLE
| pr(3)= 60 when pr(i)= 72 pr(0)= 0, pr(1)= 2, pr(2)= 6, pr(3)= 12... pr(i)= 72.
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CROSSREFS
| Sequence in context: A036187 A035879 A033392 * A008943 A003898 A133899
Adjacent sequences: A110675 A110676 A110677 * A110679 A110680 A110681
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KEYWORD
| easy,sign
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AUTHOR
| Stuart M. Ellerstein (ellerstein(AT)aol.com), Sep 14 2005
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EXTENSIONS
| Edited by Charles R Greathouse IV (charles.greathouse(AT)case.edu), Jul 25 2010
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