////////////////////////////////////////////////////////////////
//
//     http://www.planetquantum.com/Solve/Level1/Den13/Page48.txt
//
////////////////////////////////////////////////////////////////

Generator:
(C (^ _E 1/2) (Log 7) 6 7 4)

Problem:
(= (cdot #[[1648 7212 7070 128 1468 4865 787]
           [8141 6357 1653 7761 71 148 115]
           [7507 9311 6406 6102 1194 2156 863]
           [2776 5200 5636 6643 28 6663 7756]
           [3077 9700 4671 1669 7521 9609 1598]
           [4097 1452 4900 5979 6929 4226 5909]]
         #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7]])
   #[[1945] [9101] [4905] [5313] [3051] [535]])

Solution:
(= #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7]]
   #[[10579438584963821479191]
     [-1840199296593044776605]
     [-1742986622011140522821]
     [-9309718452757592067965]
     [-2103423270897813602662]
     [1711646842935117988800]
     [5224682832756083564689]])