A043892 Numbers n such that 1 and 4 occur juxtaposed in the base 5 representation of n but not of n+1.

9, 21, 34, 49, 59, 71, 84, 96, 109, 121, 134, 146, 159, 174, 184, 196, 209, 221, 249, 259, 271, 284, 299, 309, 321, 334, 346, 359, 371, 384, 396, 409, 424, 434, 446, 459, 471, 484, 496, 509, 521, 549, 559, 571, 584, 596, 609, 621