OFFSET
1,1
LINKS
Daniel Suteu, Table of n, a(n) for n = 1..14207 (all terms < 10^17).
EXAMPLE
14563696180319 = 11*13*17*23*29*41*47*59*79 and 12, 14, 18, 24, 30, 42, 48, 60, and 80 all divide 14563696180320.
PROG
(PARI) is(n)={omega(n)==9&&is_A006972(n)}
CROSSREFS
KEYWORD
nonn
AUTHOR
Tim Johannes Ohrtmann, Nov 06 2021
STATUS
approved