【正文】
le 3217105)116()19()14()14()13()12(1222422???????????????????iiMore Summation Examples ? An infinite series with a finite sum: ? Using a predicate to define a set of elements to sum over: 2...1...222 4121100???????? ???ii874925947532 222210 p r i m e ) is (2 ????????????xxxCh29 Example 14. Table 2. Some useful summation formulae 6420}4,2,0{??????SS1 ,1)1( )1( 10?? ??? rrraarnnkk2)1( )2(1????