A044476 Numbers n such that string 3,3 occurs in the base 5 representation of n but not of n+1.

18, 43, 68, 94, 118, 143, 168, 193, 219, 243, 268, 293, 318, 344, 368, 393, 418, 443, 474, 493, 518, 543, 568, 594, 618, 643, 668, 693, 719, 743, 768, 793, 818, 844, 868, 893, 918, 943, 969, 993, 1018, 1043, 1068, 1099, 1118