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A086250 Smallest base-2 Fermat pseudoprime x that has ord(2,x) = n, or 0 if one does not exist. +0
2
0, 0, 0, 0, 0, 0, 0, 0, 0, 341, 2047, 0, 0, 5461, 4681, 4369, 0, 1387, 0, 13981, 42799, 15709, 8388607, 1105, 1082401, 22369621, 0, 645, 256999, 10261, 0, 16843009, 1227133513, 5726623061, 8727391, 1729, 137438953471, 91625968981, 647089, 561 (list; graph; listen)
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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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