Litanies to Brother François - Champagnat.Org
Retitled: A Mathematical History of the Golden Number, with new preface and
corrections and additions, Dover, 1998. Pp. 157-162 discuss early ...... 64?65.
Multiply by 6/5 and spend 12, multiply by 5/3 and spend 17, double and spend 20
, leaving 0. F. 59v, p. 135. (Double and spend 12) thrice to leave 3. Paolo dell'
Abbaco.