|
|
A243010
|
|
Pseudoprimes to base 5 that are not squarefree.
|
|
5
|
|
|
4, 124, 11476, 59356, 80476, 91636, 250876, 261964, 482516, 1385836, 1926676, 2428084, 2589796, 3743476, 4101796, 6797764, 9155476, 10701076, 10743436, 11263396, 13799836, 13859956, 15570556, 20396476
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Any term is divisible by the square of a base 5 Wieferich prime (A123692).
Intersection of A005936 and A013929. - Michel Marcus, Aug 21 2014
|
|
LINKS
|
Amiram Eldar, Table of n, a(n) for n = 1..879 (terms below 10^12)
|
|
PROG
|
(PARI) forcomposite(n=1, 1e9, if(Mod(5, n)^(n-1)==1, if(!issquarefree(n), print1(n, ", "))))
|
|
CROSSREFS
|
Cf. A005936, A123692, A158358, A243089, A243090, A244065.
Sequence in context: A197779 A197610 A090082 * A343427 A209040 A068891
Adjacent sequences: A243007 A243008 A243009 * A243011 A243012 A243013
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Felix Fröhlich, Aug 18 2014
|
|
STATUS
|
approved
|
|
|
|