|
|
A263865
|
|
Odd k for which abs(2^m - k) is nonprime for all m < k.
|
|
0
|
|
|
1, 337, 2293, 4327, 6247, 6269, 12749, 13603, 14023, 14347, 14407, 15997, 21673, 25229, 31511, 36971, 47107, 48703, 48959
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
|
|
LINKS
|
|
|
PROG
|
(PARI) forstep(k=1, 6269, 2, c=m=0; while(m<k, if(ispseudoprime(abs(2^m-k)), c=1; break); m++); if(c==0, print1(k, ", ")));
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,more
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|