Definition:Fermat Pseudoprime/Base 4/Sequence
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Sequence of Fermat Pseudoprimes to Base $4$
The sequence of Fermat pseudoprimes base $4$ begins:
- $15, 85, 91, 341, 435, 451, 561, 645, 703, 1105, 1247, 1271, 1387, 1581, 1695, 1729, 1891, 1905, 2047, 2071, 2465, \ldots$
This sequence is A020136 in the On-Line Encyclopedia of Integer Sequences (N. J. A. Sloane (Ed.), 2008).
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $217$