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A261408
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Numbers k such that A260864(k) is a prime or probable prime, where A260864(k) is the number whose base-14 representation is the concatenation of the base-14 representations of (1, ..., k, k-1, ..., 1).
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2
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OFFSET
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1,1
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COMMENTS
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The subsequence of those A261171(n) for which A261172(n) = 14. - M. F. Hasler, Aug 23 2015
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REFERENCES
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David Broadhurst, email to N. J. A. Sloane, Aug 23 2015
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LINKS
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Table of n, a(n) for n=1..7.
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CROSSREFS
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Cf. A260343, A260864.
See also A260871 which lists all primes of the form A[b](k), and A261171 and A261172 which list the k and b values of these primes. - M. F. Hasler, Aug 23 2015
Sequence in context: A053409 A253910 A144205 * A008946 A095738 A216467
Adjacent sequences: A261405 A261406 A261407 * A261409 A261410 A261411
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KEYWORD
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nonn,more
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AUTHOR
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N. J. A. Sloane, Aug 22 2015
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EXTENSIONS
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More explicit title from M. F. Hasler, Aug 23 2015
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STATUS
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approved
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