Numbers n such that string 5,1 occurs in the base 9 representation of n but not of n+1.

Terms

a(0) =46a(1) =127a(2) =208a(3) =289a(4) =370a(5) =422a(6) =451a(7) =532a(8) =613a(9) =694a(10) =775a(11) =856a(12) =937a(13) =1018a(14) =1099a(15) =1151a(16) =1180a(17) =1261a(18) =1342a(19) =1423a(20) =1504a(21) =1585a(22) =1666a(23) =1747a(24) =1828a(25) =1880a(26) =1909a(27) =1990a(28) =2071a(29) =2152