A043903 Numbers n such that 1 and 4 occur juxtaposed in the base 6 representation of n but not of n+1.

10, 25, 46, 65, 82, 97, 118, 133, 155, 169, 190, 205, 226, 241, 262, 281, 298, 313, 334, 349, 395, 406, 421, 442, 457, 478, 497, 514, 529, 550, 565, 587, 601, 622, 637, 658, 673, 694, 713, 730, 745, 766, 781, 803, 817, 838, 853