a=4 b=1 N=24 nonextendable solution #1 (g=48): 0: 00000 1: 00001 2: 00110 3: 00111 4: 01010 5: 01011 6: 01100 7: 01101 8: 10000 9: 10011 10: 10101 11: 10110 12: 11001 13: 11010 14: 11100 15: 11111 16: 20010 17: 20011 18: 20100 19: 20101 20: 21000 21: 21001 22: 21110 23: 21111 nonextendable solution #2 (g=1152): 0: 00000 1: 00011 2: 00101 3: 00110 4: 01001 5: 01010 6: 01100 7: 01111 8: 10000 9: 10011 10: 10101 11: 10110 12: 11001 13: 11010 14: 11100 15: 11111 16: 20000 17: 20011 18: 20101 19: 20110 20: 21001 21: 21010 22: 21100 23: 21111 nonextendable solution #3 (g=384): 0: 00000 1: 00011 2: 00101 3: 00110 4: 01001 5: 01010 6: 01100 7: 01111 8: 10000 9: 10011 10: 10101 11: 10110 12: 11001 13: 11010 14: 11100 15: 11111 16: 20001 17: 20010 18: 20100 19: 20111 20: 21000 21: 21011 22: 21101 23: 21110 That was all - 3 solutions