A044036 Numbers n such that 6 and 8 occur juxtaposed in the base 10 representation of n but not of n+1.

68, 86, 168, 186, 268, 286, 368, 386, 468, 486, 568, 586, 668, 689, 768, 786, 869, 886, 968, 986, 1068, 1086, 1168, 1186, 1268, 1286, 1368, 1386, 1468, 1486, 1568, 1586, 1668, 1689, 1768, 1786, 1869, 1886, 1968, 1986, 2068