a=4 b=0 N=32 solution #1 (g=192): 0: 0000 1: 0000 2: 0000 3: 0000 4: 0011 5: 0011 6: 0011 7: 0011 8: 0101 9: 0101 10: 0101 11: 0101 12: 0110 13: 0110 14: 0110 15: 0110 16: 1001 17: 1001 18: 1001 19: 1001 20: 1010 21: 1010 22: 1010 23: 1010 24: 1100 25: 1100 26: 1100 27: 1100 28: 1111 29: 1111 30: 1111 31: 1111 solution #2 (g=192): 0: 0000 1: 0000 2: 0000 3: 0001 4: 0010 5: 0011 6: 0011 7: 0011 8: 0100 9: 0101 10: 0101 11: 0101 12: 0110 13: 0110 14: 0110 15: 0111 16: 1000 17: 1001 18: 1001 19: 1001 20: 1010 21: 1010 22: 1010 23: 1011 24: 1100 25: 1100 26: 1100 27: 1101 28: 1110 29: 1111 30: 1111 31: 1111 solution #3 (g=384): 0: 0000 1: 0000 2: 0001 3: 0001 4: 0010 5: 0010 6: 0011 7: 0011 8: 0100 9: 0100 10: 0101 11: 0101 12: 0110 13: 0110 14: 0111 15: 0111 16: 1000 17: 1000 18: 1001 19: 1001 20: 1010 21: 1010 22: 1011 23: 1011 24: 1100 25: 1100 26: 1101 27: 1101 28: 1110 29: 1110 30: 1111 31: 1111 That was all - 3 solutions