login
A023527
Least odd prime divisor of p(n)*p(n-1) + 1, or 1 if p(n)*p(n-1) + 1 is a power of 2.
1
3, 7, 1, 3, 3, 3, 3, 3, 3, 167, 3, 7, 3, 3, 3, 7, 17, 3, 7, 3, 3, 7, 3, 1847, 3, 3, 3, 3, 3, 3, 3, 3, 7, 3, 3, 3, 5927, 7, 3, 31, 7, 3, 3, 3, 3, 3, 5, 7, 3, 3, 3, 6961, 3, 3, 16127, 7, 23, 3, 7, 3, 3, 3, 3, 3, 3, 3, 3, 79, 3, 3, 3, 7, 3, 7, 41, 3, 7, 3, 3, 3
OFFSET
1,1
LINKS
Sean A. Irvine, Java program (github)
CROSSREFS
Sequence in context: A096409 A356704 A019631 * A016664 A197758 A071792
KEYWORD
nonn
EXTENSIONS
Terms corrected by Sean A. Irvine, Jun 26 2019
STATUS
approved