OFFSET
1,1
LINKS
Hisanori Mishima, Factorizations of many number sequences
Hisanori Mishima, Factorizations of many number sequences
EXAMPLE
a(1) = 20 so the numerator of Bernoulli(20) = 174611 = 283 * 617 is a semiprime.
CROSSREFS
KEYWORD
nonn
AUTHOR
Eric Chen, Dec 24 2014
STATUS
approved