login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A000923 Primes p of the form 3k+1 such that sum_{x=1..p} cos(2*Pi*x^3/p) < -sqrt(p).
(Formerly M5365 N2331)
3
97, 139, 151, 199, 211, 331, 433, 541, 547, 601, 607, 631, 751, 787, 937, 1039, 1063, 1249, 1321, 1327, 1381, 1471, 1483, 1663, 1693, 1741, 1747, 1879, 1999, 2113, 2143, 2377, 2437, 2503, 2521, 2557, 2593, 2677, 2797, 2857, 2887, 3019, 3121, 3313, 3331, 3361 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
REFERENCES
H. Hasse, Vorlesungen über Zahlentheorie. Springer-Verlag, NY, 1964, p. 482.
G. B. Mathews, Theory of Numbers, 2nd edition. Chelsea, NY, p. 228.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
EXAMPLE
97 is here because the sum of cos(2*Pi*x^3/97) = -11.3259 < -sqrt(97).
CROSSREFS
Sequence in context: A258877 A073076 A157213 * A142528 A139500 A344481
KEYWORD
nonn
AUTHOR
EXTENSIONS
Edited by Don Reble, May 26 2007
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 10:31 EDT 2024. Contains 371240 sequences. (Running on oeis4.)