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A061445
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Composite numbers n such that primitive part of Lucas(n) (see A061447) is prime.
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6
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9, 10, 14, 15, 20, 21, 26, 27, 30, 33, 36, 38, 49, 56, 62, 66, 68, 70, 72, 76, 78, 80, 86, 90, 91, 110, 117, 120, 121, 136, 140, 144, 164, 168, 172, 178, 202, 207, 220, 261, 284, 328, 354, 357, 420, 423, 458, 459, 468, 480, 504, 513, 530, 586, 606
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| Brillhart, John; Montgomery, Peter L.; Silverman, Robert D.; Tables of Fibonacci and Lucas factorizations. Math. Comp. 50 (1988), no. 181, 251-260, S1-S15. Math. Rev. 89h:11002.
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LINKS
| David Broadhurst, Table of n, a(n) for n=1..257 yielding primes or probable primes
C. K. Caldwell, Lucas Aurifeuillian primitive part
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CROSSREFS
| Cf. A061446, A061447, A061254, A061442, A061443.
Sequence in context: A189834 A110095 A169870 * A088710 A020199 A114844
Adjacent sequences: A061442 A061443 A061444 * A061446 A061447 A061448
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KEYWORD
| nonn
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AUTHOR
| David Broadhurst (D.Broadhurst(AT)open.ac.uk), Jun 10 2001
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EXTENSIONS
| Definition corrected by T. D. Noe (noe(AT)sspectra.com), Dec 14 2006
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