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A089821
Number of subsets of {1,.., n} containing exactly one prime.
+0
4
0, 2, 4, 8, 12, 24, 32, 64, 128, 256, 320, 640, 768, 1536, 3072, 6144, 7168, 14336, 16384, 32768, 65536, 131072, 147456, 294912, 589824, 1179648, 2359296, 4718592, 5242880, 10485760, 11534336, 23068672, 46137344, 92274688
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Maintained by
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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.
AT&T Labs Research
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