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A064605
Partial sum of Sigma_2(n) is divisible by n, where Sigma_2(n)=
A001157
(n).
+0
7
1, 2, 8, 74, 146, 150, 158, 307, 526, 541, 16157, 20289, 271343, 953614
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Maintained by
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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.
AT&T Labs Research
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