Numbers n such that string 2,4 occurs in the base 8 representation of n but not of n-1.

Terms

a(0) =20a(1) =84a(2) =148a(3) =160a(4) =212a(5) =276a(6) =340a(7) =404a(8) =468a(9) =532a(10) =596a(11) =660a(12) =672a(13) =724a(14) =788a(15) =852a(16) =916a(17) =980a(18) =1044a(19) =1108a(20) =1172a(21) =1184a(22) =1236a(23) =1280a(24) =1364a(25) =1428a(26) =1492a(27) =1556a(28) =1620a(29) =1684