FOllMULJC FOK sn 10 «, culOu, dnlO« IN TERMS UF snw. 287 



n (}i- — 4) (yi- — 1 6) hr — Am) 



A„^, = 7l, ^2,H.o=(-l) 



{•Itn+1) 



'1.,:- 3 1 . -h,n,2--{ -I) (•2w + l)! 



and. generally. 



■lin rl/n + 1) J,,„ ,, + (n- (4/-+ l)-4;;r] .4,,,. „^ ,,, 



- [ir [ir-3)-2ir (:2/u - i) + 4m-] A.,,„_.^ .„„.-(/r- 2;yi + 1) (yr-2m) Ä.„,^_i ,,_ 



r=0 \ TOT ) 



wliere 



D 



_ n D _ . _ 1 m-i o i"t-2 "-' 0^'- 1) (?r - 4) [n- - (m- 1)-] 



•2;n ! 

 X [ ['2m' — {m — i)] )i'- — [m — 1) [1 m — 5; } , 

 and. a'enerally. 



'2m(2m-\)D,,„^,, + [4nr-4 (m-1)-] D,,,„_o,,, 



=. [ ,^2 ^4;._ 4) _ 2,i^ ^2;;;, _ o) + 4 ^^/^ _ 1 .2 j £)_^^^___^_ ^^_^ 



-Or- 2m + 4) (/;--2m + 8) D._,^_,^o^.. 

 wliere 



1? —1 7-' _ ( ]Vn M-(».- — 4)(/r— 1(3) [„-'_4(yy;_l)2] 



"Ii/i ! 



