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A013932
a(n) is square-free and is sum of first k square-frees for some k.
+0
4
1, 3, 6, 11, 17, 34, 58, 87, 123, 166, 215, 274, 305, 407, 482, 521, 562, 647, 791, 899, 1073, 1261, 1327, 1394, 1463, 1533, 1677, 1751, 1906, 1985, 2067, 2235, 2321, 2497, 2681, 2870, 2967, 3170, 3273, 3378
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Maintained by
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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.
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