OFFSET
1,1
EXAMPLE
29023908435660702564000000 = 2^8 * 3^7 * 5^6 * 7^5 * 11^4 * 13^3 * 17 * 19^2 is in the sequence as there are exactly 8 distinct exponents; 1 through 8.
PROG
(PARI) is(n) = #Set(factor(n)[, 2]) == 8
CROSSREFS
KEYWORD
nonn
AUTHOR
David A. Corneth, Feb 17 2019
STATUS
approved