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A129741
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List of primitive prime divisors of the Somos-4 sequence (A006720) in their order of occurrence.
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3
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2, 3, 7, 23, 59, 157, 11, 139, 8209, 9257, 620297, 983, 4003, 1847, 9803, 1687054711, 1433, 33008447, 83, 101, 113, 51563, 61, 823, 5381, 20117, 262650531833, 6329, 197, 519606349, 10259, 136667817691, 11887, 2621, 564188663, 42591667, 13933
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Read A006720 term-by-term, factorize each term, write down any primes not seen before.
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REFERENCES
| G. Everest et al., Primes generated by recurrence sequences, Amer. Math. Monthly, 114 (No. 5, 2007), 417-431.
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CROSSREFS
| Cf. A006720, A129739, A129740.
Sequence in context: A000057 A037231 A082449 * A006720 A084710 A088173
Adjacent sequences: A129738 A129739 A129740 * A129742 A129743 A129744
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), May 13 2007
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