A055182 n-th distinct number to appear in A055174.; also the n-th to appear in A055192.

4, 1, 2, 3, 5, 6, 7, 8, 9, 10, 12, 14, 13, 17, 11, 15, 19, 16, 22, 25, 27, 20, 24, 29, 21, 18, 26, 32, 23, 36, 28, 40, 31, 30, 43, 34, 46, 35, 49, 37, 52, 42, 38, 33, 55, 45, 44, 41, 39, 58, 50, 63, 53, 66, 57, 54, 48, 69, 59, 74, 62, 60, 51