134 E. J. VAN DEN BERG. QUELQUES FORMULES 



1=1, SB, -1, [3] 



2 = 2, 5(B 3 +B,) = 1,[5] 

 2 = 3, 7 (B 5 -B,) = -l, [7] 

 î = 4, 9(B 7 -B 3 ) = 0, [9] 



2 = 5, 11 (B 9 + B 3 ) - Q (B 7 + B„) = 0, [11, 21] 



î = 8. 13(B 11 + B 5 )- fJ^Q (B 9 + B 7 ) = 0, [13, 33] 

 2 = 7, 15(B, 3 -B 5 )- (B,,-B 7 ) = 0, [15, 78] 



? = », 17(B, 5 -B,)-^^ Q (B I 3-B â ) = 0,[17 ! 110] 

 ? = 9, 19 (B, ,+ B 7 ) - ^g- 7 Q (B, , + B 9 ) + 2.13.15 j 



i si (D + àG) I (Bl 3 + } = °' [19 ' 187 ' 208] 



î = 10, 21(B 19 + B 9 )-M|1 9 (®)(B IT + B 1I ) + 



+ W (2)^' r. + B, 3) = 0, [21, 247, 306] 

 ? = 11, 23(B 21 -B 9 )- 8 -g|- 1 ( 1 0 0 )(B, 9 -B 11 ) + 4.15.19) 



! 3 4"5 (2) + i (0) ^ - £ . 3) = ». P3, 364, 931] 

 2 = 12, 25 <B 13 -T),,)- 8 ^? (q 1 )^». -' B . 3 ) + 



+ ^ÎX (") {B ' ' ~ B ' s) = °' [25, 460 ' 1309] 



2 = 13, 27(B 25 + B 11 )-^^( 1 0 2 ) (B 23+ £ 13 ) + 



+ 6 - 17 - 23 ! i (2) + 0.5 (0) ! ^ + B - °> - 



- 2 - 19 - 21 | 5^7 (i') + 3±7 (?) ^) = »> 



[27, 625, 2737, 2299] 

 etc. 



