Powerful {Zseq}

Powerful numbers

Description

Under OEIS A001694, a Powerful number is a positive integer such that for every prime p dividing the number, p^2 also divides the number. First 6 powerful numbers are 1, 4, 8, 9, 16, 25.

Usage

Powerful(n, gmp = TRUE)

Arguments

n

the number of first n entries from the sequence.

gmp

a logical; TRUE to use large number representation, FALSE otherwise.

Value

a vector of length n containing first entries from the sequence.

Examples

## generate first 20 Powerful numbers
print(Powerful(20))