Cyclic Difference Sets (43, 21, 10)

Types H_6, Q


    1     2     3     4     5     8    11    12    16    19    20    21
   22    27    32    33    35    37    39    41    42 

    1     4     6     9    10    11    13    14    15    16    17    21
   23    24    25    31    35    36    38    40    41