A043915 Numbers n such that 0 and 5 occur juxtaposed in the base 7 representation of n but not of n+1.

35, 54, 84, 103, 133, 152, 182, 201, 231, 251, 280, 299, 329, 348, 384, 397, 427, 446, 476, 495, 525, 544, 574, 594, 623, 642, 672, 691, 727, 740, 770, 789, 819, 838, 868, 887, 917, 937, 966, 985, 1015, 1034, 1070, 1083, 1113