OFFSET
1,1
LINKS
Chai Wah Wu, Table of n, a(n) for n = 1..1000
EXAMPLE
The least prime factor of the numerator of Bernoulli(2*509) is not equal to 509, so 509 is a term.
CROSSREFS
KEYWORD
nonn
AUTHOR
Chai Wah Wu, Feb 10 2020
STATUS
approved