a:     3       4       5        6        7        8        9      10       11      12      13      14      15      16     17     18      19      20      21     22    23
   b  |______________________________________________________________________________________________________________________________________________________________________
   1  |     1       1       2        3        5        8       13      21       34      55      89     144     233     377    610    987    1597    2584    4181   6765    *
   2  |     2       2       4        6       10       16       26      42       68     110     178     288     466     754   1220   1974    3194      *       *      *
   3  |     4       4       8       12       20       32       52      84      136     220     356     576     932    1508   2440   3984      *
   4  |     8       8      16       24       40       64      104     168      272     440     712    1152    1864    3016     *      *
   5  |    16      16      32       48       80      128      208     336      544     880    1424    2304      *       *
   6  |    32      32      64       96      160      256      416     672     1088    1760      *       *
   7  |    64      64     128      192      320      512      832    1344       *       *
   8  |   128     128     256      384      640     1024       *       *
   9  |   256     256     512      768       *        *
  10  |   512     512    1024       *
  11  |  1024      *       *
           *
  

Figure 7: Table of cardinalities of sets sharing a and b of the 2^a*3^b*n+c formulas