|
|
A261408
|
|
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).
|
|
2
|
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
The subsequence of those A261171(n) for which A261172(n) = 14. - M. F. Hasler, Aug 23 2015
|
|
REFERENCES
|
David Broadhurst, email to N. J. A. Sloane, Aug 23 2015
|
|
LINKS
|
Table of n, a(n) for n=1..7.
|
|
CROSSREFS
|
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
|
|
KEYWORD
|
nonn,more
|
|
AUTHOR
|
N. J. A. Sloane, Aug 22 2015
|
|
EXTENSIONS
|
More explicit title from M. F. Hasler, Aug 23 2015
|
|
STATUS
|
approved
|
|
|
|