319	 On a Class of Iteration Formulas and Some Historical Notes	 The class of iteration formulas obtainable by rational approximations of Euler s formula is derived with the corresponding error estimates. Some historical notes on iterative procedures are followed by a derivation of Euler s formula with the associated error estimate in a new notation which simplifies the error estimate and suggests generalizations. The final section considers the Pade approximants to the Euler polynomial and shows how a number of known formulas may be derived from this unified approach. There is a short discussion of the best formula.
