J. Integer Seq. 6(1), Art. 03.1.2, 8 p., electronic only (2003)
Summary
Summary: In this paper we introduce some formulas for the number of derangements. Then we define the derangement function and use the software package MAPLE to obtain some integrals related to the incomplete gamma function and also to some hypergeometric summations.
Mathematics Subject Classification
05A10, 33B20, 33C20
Keywords/Phrases
e, derangements, derangement function, incomplete gamma function, hypergeometric function (Concerned with sequence
