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A139542 a(n) = a(n-1) + largest divisor of a(n-1) <= sqrt(a(n-1)). +0
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1, 2, 3, 4, 6, 8, 10, 12, 15, 18, 21, 24, 28, 32, 36, 42, 48, 54, 60, 66, 72, 80, 88, 96, 104, 112, 120, 130, 140, 150, 160, 170, 180, 192, 204, 216, 228, 240, 255, 270, 285, 300, 315, 330, 345, 360, 378, 396, 414, 432, 450, 468, 486, 504, 525, 546, 567, 588, 609 (list; graph; listen)
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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