A043958 Numbers n such that 5 and 7 occur juxtaposed in the base 8 representation of n but not of n+1.

47, 61, 111, 125, 175, 189, 239, 253, 303, 317, 367, 383, 431, 445, 495, 509, 559, 573, 623, 637, 687, 701, 751, 765, 815, 829, 879, 895, 943, 957, 1007, 1021, 1071, 1085, 1135, 1149, 1199, 1213, 1263, 1277, 1327, 1341, 1391