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

Terms

a(0) =16a(1) =65a(2) =118a(3) =163a(4) =212a(5) =261a(6) =310a(7) =359a(8) =408a(9) =461a(10) =506a(11) =555a(12) =604a(13) =653a(14) =702a(15) =751a(16) =832a(17) =849a(18) =898a(19) =947a(20) =996a(21) =1045a(22) =1094a(23) =1147a(24) =1192a(25) =1241a(26) =1290a(27) =1339a(28) =1388a(29) =1437