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A019565 If n = Sum 2^e_i, e_i distinct, then a(n) = Product prime_{e_{i+1}}. +0
18
1, 2, 3, 6, 5, 10, 15, 30, 7, 14, 21, 42, 35, 70, 105, 210, 11, 22, 33, 66, 55, 110, 165, 330, 77, 154, 231, 462, 385, 770, 1155, 2310, 13, 26, 39, 78, 65, 130, 195, 390, 91, 182, 273, 546, 455, 910, 1365, 2730, 143, 286, 429, 858, 715, 1430, 2145, 4290 (list; graph; listen)
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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.


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