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A075868
tau(n) = phi(sum of prime factors of n).
+0
1
3, 6, 15, 20, 21, 28, 35, 50, 66, 98, 99, 104, 105, 114, 125, 130, 154, 170, 210, 230, 276, 325, 351, 352, 363, 372, 374, 380, 414, 444, 459, 476, 532, 539, 558, 572, 580, 585, 608, 666, 693, 696, 845, 847, 950, 968, 975
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Maintained by
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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.
AT&T Labs Research
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