Numbers with no 1's in base 3 & 4 expansions.

Terms

a(0) =0a(1) =2a(2) =8a(3) =56a(4) =60a(5) =62a(6) =162a(7) =168a(8) =170a(9) =186a(10) =188a(11) =224a(12) =234a(13) =236a(14) =240a(15) =242a(16) =512a(17) =546a(18) =558a(19) =560a(20) =648a(21) =650a(22) =654a(23) =672a(24) =674a(25) =702a(26) =704a(27) =2106a(28) =2108a(29) =2178