OFFSET
1,1
LINKS
David A. Corneth, Table of n, a(n) for n = 1..10000
EXAMPLE
6197831640000 = 2^6 * 3^5 * 5^4 * 7^3 * 11 * 13^2 is in the sequence as there are 6 distinct exponents; 1 through 6.
PROG
(PARI) is(n) = #Set(factor(n)[, 2]) == 6
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
David A. Corneth, Feb 17 2019
STATUS
approved