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#' Odious numbers
#'
#' Under OEIS \href{https://oeis.org/A000069}{A000069}, an \emph{Odious} number has an odd number of 1's in its binary expansion.
#' First 6 Odious numbers are 1, 2, 4, 7, 8, 11.
#'
#' @param n the number of first \code{n} entries from the sequence.
#' @param gmp a logical; \code{TRUE} to use large number representation, \code{FALSE} otherwise.
#'
#' @return a vector of length \code{n} containing first entries from the sequence.
#'
#' @examples
#' ## generate first 20 Odious numbers
#' print(Odious(20))
#'
#' @seealso \code{\link{Evil}}
#' @rdname A000069
#' @aliases A000069
#' @export
Odious <- function(n, gmp=TRUE){
## Preprocessing for 'n'
n = check_n(n)
## Main Computation : first, compute in Rmpfr form
output = as.bigz(numeric(n))
output[1] = 1
if (n>1){
tgt = as.bigz(1)
iter = 1
while (iter<n){
tgt = tgt + 1
if (!is.Evil(tgt)){
iter = iter+1
output[iter] = tgt
}
}
}
## Rmpfr
if (!gmp){
output = as.integer(output)
}
return(output)
}
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