The included code is dedicated to the public domain by the author, Colin L Rymer, in accordance with CC0 1.0 Universal Public Domain Dedication - http://creativecommons.org/publicdomain/zero/1.0/

january_coding_challenge.rb

class String
  def palindrome?
    !!(self =~ /\A(?<p>| \w | (?: (?<l>\w) \g<p> \k<l+0> ))\z/x)
  end
end

def palindrome_count_value(int)
  int.to_s(2).palindrome? ? 1 : 0
end

range = ARGV[0].to_i..ARGV[1].to_i

puts range.reduce(0) { |count, int| count + palindrome_count_value(int) }