... + +()( ) 2 2 2 2 2 2 2 2 2 2 2 20, 2 2 1 2 1 1 2 3 2 21, 9 3 11 1 6 1 2 1 22 , 3 2 2 1 2 23, 2 1 31 2 1 24 , 2 24 2 25, 3 2 4 3 8 26 , 4 1 3 2 4 3 1 27 , 5 3 6 3 2 2 1 28 , 1 4 3 0 29 xx x x ... ) 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 23 , 3 2 1 5 2 24, 2 2 3 1 53 1 25 , 5 6 14 2 26, 2 5 3 1 27 , 6 6 1 2 1 3 28 , 11 21 6 4 1 3 5 29 , 4 11 4 3 4 5 630, 11 10 9 4 3 431, 4 20 3 1 19 1 32, ... = +( ) 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1313, 1 3 414, 3 13 6 5 4415, 15 8 7 4 2 116, 3 3 7 2 9 117, 4 4 3 4 21 718, 2 1 2 5 2 119, 4 2 3 4 1 20 , 10 22 6 3 7 21 , 12 1 2 12 20 22 , 7 16...