Amos source code approximating 16 points with third degree polynomial
using matrix method.

PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[generic]                 1731   10084  17.2% -lh5- 674c Dec  8  1980 dynamiczne kwadraty.amos
[generic]                  225     327  68.8% -lh5- 7c51 Dec  8  1980 dynamiczne kwadraty.readme
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total         2 files    1956   10411  18.8%            Dec 10 03:12