Under OEIS A064052, an Unusual number is a natural number whose largest prime factor is strictly greater than square root of the number.
First 6 Unusual numbers are 2, 3, 5, 6, 7, 10.
Usage
Unusual(n, gmp = TRUE)
Value
a vector of length n containing first entries from the sequence.
Arguments
n
the number of first n entries from the sequence.
gmp
a logical; TRUE to use large number representation, FALSE otherwise.