00303nam a2200121 a 4500008004100000020001500041050001500056100001400071245002500085246003700110260002500147350000900172120416s0000    ||||||||||||||||| ||    u  a0340652519  aQA 241 Bur  aBurn, Bob12aA cascade of numbers  aan introduction to number theory  aLondonbArnoldc1996  a0.00