From: Robert Feldt <feldt@...>
Date: 2001-03-10T00:08:39+09:00
Subject: [ruby-talk:12332] ...and the challenge

Hi again,

Yes I forgot the challenge:

Write a nice, fast and small Ruby program for generating the n
first numbers in the Hamming sequence defined as

"List of all numbers, in ascending order, of the form
(2**i)*(3**j)*(5**k) for i,j,k at least 0. It begins like

	1 2 3 4 5 6 8 9 10 12 15 16 18 ..."

ie. 

  def hamming_seq(n)
    #...
  end

so that hamming_seq(10) == [1,2,3,4,5,6,8,9,10,12]

/Robert