Numbers n such that string 2,2 occurs in the base 10 representation of n but not of n+1.

Terms

a(0) =22a(1) =122a(2) =229a(3) =322a(4) =422a(5) =522a(6) =622a(7) =722a(8) =822a(9) =922a(10) =1022a(11) =1122a(12) =1229a(13) =1322a(14) =1422a(15) =1522a(16) =1622a(17) =1722a(18) =1822a(19) =1922a(20) =2022a(21) =2122a(22) =2299a(23) =2322a(24) =2422a(25) =2522a(26) =2622a(27) =2722a(28) =2822a(29) =2922