Zseq (version 0.1.1)

Powerful: 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, Rmpfr = TRUE, PrecisionBits = 496)

Arguments

n

the number of first n entries from the sequence.

Rmpfr

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

PrecisionBits

a positive integer for precision bits larger than 2.

Value

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

Examples

# NOT RUN {
## generate first 20 Powerful numbers
first20 = Powerful(20)

## print without trailing 0's.
print(first20, drop0trailing = TRUE)

# }