A043230 Numbers n such that 1 and 7 occur juxtaposed in the base 10 representation of n but not of n-1.

17, 71, 117, 170, 217, 271, 317, 371, 417, 471, 517, 571, 617, 671, 710, 771, 817, 871, 917, 971, 1017, 1071, 1117, 1170, 1217, 1271, 1317, 1371, 1417, 1471, 1517, 1571, 1617, 1671, 1700, 1817, 1871, 1917, 1971, 2017, 2071