b = {1, 9, 10, 13, 14, 43, 44, 5, 6, 25, 26, 28, 30, 33, 34, 37, 38, 49, 50, 57, 58, 61, 11, 12, 17, 18, 21, 22, 31, 32, 41, 42, 47, 48, 53, 54, 55, 56, 59, 60, 63, 64, 3, 4, 19, 20, 27, 29, 35, 36, 39, 40, 45, 46, 51, 52, 62, 7, 8, 15, 16, 23, 24, 2} Sort[b] Length[b] ListPlot[b, PlotJoined -> True]