OFFSET
1,25
COMMENTS
This was done with data on Carmichael numbers below 10^21 provided by R. G. E. Pinch, and special computational assistance from William Stein.
There are 16396564 Carmichael numbers below 2^69 but only 849752 have the property of A182116. It looks as though the ratio of Carmichael numbers of this type to normal Carmichael numbers converges to a value around 0.051.
LINKS
Richard Pinch, Carmichael numbers up to 10^21
CROSSREFS
KEYWORD
nonn
AUTHOR
Brad Clardy, May 14 2014
STATUS
approved