

A014659


Numbers n that are odd and do not divide 2^k + 1 for any k >= 1.


2



7, 15, 21, 23, 31, 35, 39, 45, 47, 49, 51, 55, 63, 69, 71, 73, 75, 77, 79, 85, 87, 89, 91, 93, 95, 103, 105, 111, 115, 117, 119, 123, 127, 133, 135, 141, 143, 147, 151, 153, 155, 159, 161, 165, 167, 175, 183, 187, 189, 191, 195, 199, 203, 207, 213, 215, 217, 219
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OFFSET

1,1


COMMENTS

This is the subset of odd integers >1 as (2*n  1) in A179480 such that A179480(n) is even. Example: A179480(18) = 6, even; corresponding to (2*18  1), 35. Then 35 is in A014659. A014657 is the subset of odd terms >1 corresponding to odd terms in A179480.  Gary W. Adamson, Aug 20 2012


REFERENCES

P. Moree, Appendix to V. Pless et al., Cyclic SelfDual Z_4 Codes, Finite Fields Applic., vol. 3 pp. 4869, 1997.


LINKS

T. D. Noe, Table of n, a(n) for n=1..1000


CROSSREFS

Cf. A179480, A003558
Cf. A014657, numbers that divide 2^k + 1 for some k.
Sequence in context: A064397 A214467 A151971 * A179676 A053354 A274700
Adjacent sequences: A014656 A014657 A014658 * A014660 A014661 A014662


KEYWORD

nonn


AUTHOR

N. J. A. Sloane.


EXTENSIONS

More terms from Don Reble, Nov 03 2001


STATUS

approved



