A044657 Numbers n such that string 2,7 occurs in the base 9 representation of n but not of n+1.

25, 106, 187, 233, 268, 349, 430, 511, 592, 673, 754, 835, 916, 962, 997, 1078, 1159, 1240, 1321, 1402, 1483, 1564, 1645, 1691, 1726, 1807, 1888, 1969, 2105, 2131, 2212, 2293, 2374, 2420, 2455, 2536, 2617, 2698, 2779, 2860