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A005209
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Multilevel sieve: at k-th step, accept k numbers, reject k, accept k, ...
(Formerly M2792)
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0
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1, 3, 9, 25, 57, 145, 337, 793, 1921, 3849, 8835, 18889, 41473, 92305, 203211, 432699, 944313, 2027529, 4077769, 8745153, 18133305, 37898113, 80713737, 169730259
(list; graph; refs; listen; history; internal format)
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