A043972 Numbers n such that 1 and 6 occur juxtaposed in the base 9 representation of n but not of n+1.

15, 55, 96, 143, 177, 217, 258, 298, 339, 379, 420, 460, 503, 541, 582, 622, 663, 703, 744, 784, 825, 872, 906, 946, 987, 1027, 1068, 1108, 1149, 1189, 1295, 1311, 1351, 1392, 1432, 1473, 1513, 1554, 1601, 1635, 1675, 1716