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A084549 Numbers k that have primitive roots less than k that are nonnegative perfect seventh powers. 3
2, 131, 139, 149, 163, 169, 173, 179, 181, 227, 243, 269, 293, 317, 347, 349, 361, 373, 389, 419, 443, 461, 467, 509, 523, 541, 557, 563, 587, 613, 619, 625, 653, 661, 677, 709, 729, 773, 787, 797, 821, 829, 853, 859, 877, 907, 941, 947, 1019, 1061, 1091, 1109 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
q[n_] := Intersection[PrimitiveRootList[n], Range[Floor@Surd[n, 7]]^7] != {}; Select[Range[1000], q] (* Amiram Eldar, Oct 07 2021 *)
CROSSREFS
Sequence in context: A303445 A158110 A117626 * A142251 A125633 A089662
KEYWORD
nonn
AUTHOR
Hauke Worpel (hw1(AT)email.com), May 30 2003
EXTENSIONS
a(1) inserted and more terms added by Amiram Eldar, Oct 07 2021
STATUS
approved

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Last modified April 23 00:41 EDT 2024. Contains 371906 sequences. (Running on oeis4.)