358 



76 



S = n—i 



54. 



55 



56. 



2 



32/.+i_3 

 2 



32n+l_3 



2~ 



32" + 3 



92<i-l 



.s = 1 



s = n— 1 



s==n — 1 

 r„+ y^( — lW^"^^M32n 2s82«r„^ _ (_l)n-l3(82n-l_22n). 



I2n-1 



s = l 

 .s = n-1 



r„ + y^(— 1)»(-'^^ M 32"-2M02T„-, = (—1)«-' 3 (102" -1-2'" •). 



3. Formules contenant les E „. 



s = fl— 1 



^"- ^Vl)»(^j)£n-s = (-1)"-'. 

 s = u 

 s = n— 1 



*58. ^(-D'-^IssZÎ)^'.-^ ^ r„ + (-l)«. 



s = 1 

 s =_n— 1 



s = ü ' 



s = n - 1 



s = 



5 ^ fi — 1 



'61. 2En+^\-ir{l'^\2^E„.s = (-l)"-H22"-2). 



s = 1 

 s = n— 1 



*63. ^(-l)'(2s|J)2'^£^n-s = (-1)"-H22"-1). 



s = 



*63. (2n-l)E„+^(-iyL^^j)22»£„_, = (-1) 



s = 1 

 Sj= 11 -1 



*64. 2ß„ L^(-l),(2n-l\ 22» £„_» = (-!)"-'• 2 



s =1 

 s -» " 1 

 65. ^(~1)»(^^)32«£„_, = (-l)n(22«+I_32„). 



— 1in-l. 



s = 



