OFFSET
2,1
COMMENTS
A165713(n) = the smallest integer > n that is divisible by exactly the same number of distinct primes as n is.
EXAMPLE
12 = 2^2 * 3^1, which is divisible by 2 distinct primes. The next larger integer divisible by exactly 2 distinct primes is 14 = 2^1 * 7^1. Taking the primes from the factorization of 12 and the exponents from the factorization of 14, we have a(12) = 2^1 * 3^1 = 6.
CROSSREFS
KEYWORD
nonn
AUTHOR
Leroy Quet, Sep 24 2009
EXTENSIONS
Extended by Ray Chandler, Mar 12 2010
STATUS
approved