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A139717 If k is the smallest divisor of n that is >= sqrt(n) then a(n) = k^2 - n. +0
2
0, 2, 6, 0, 20, 3, 42, 8, 0, 15, 110, 4, 156, 35, 10, 0, 272, 18, 342, 5, 28, 99, 506, 12, 0, 143, 54, 21, 812, 6, 930, 32, 88, 255, 14, 0, 1332, 323, 130, 24, 1640, 7, 1806, 77, 36, 483, 2162, 16, 0, 50, 238, 117, 2756, 27, 66, 8, 304, 783, 3422, 40, 3660, 899, 18, 0 (list; graph; listen)
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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.


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