Numbers k such that 2 and 8 occur juxtaposed in the base-10 representation of k but not of k-1.

Terms

a(0) =28a(1) =82a(2) =128a(3) =182a(4) =228a(5) =280a(6) =328a(7) =382a(8) =428a(9) =482a(10) =528a(11) =582a(12) =628a(13) =682a(14) =728a(15) =782a(16) =820a(17) =882a(18) =928a(19) =982a(20) =1028a(21) =1082a(22) =1128a(23) =1182a(24) =1228a(25) =1280a(26) =1328a(27) =1382a(28) =1428a(29) =1482