Numbers whose base-3 representation Sum_{i=0..m} d(i)*3^i has d(i)=1 for m-i odd.

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =12a(5) =13a(6) =14a(7) =21a(8) =22a(9) =23a(10) =37a(11) =40a(12) =43a(13) =64a(14) =67a(15) =70a(16) =111a(17) =112a(18) =113a(19) =120a(20) =121a(21) =122a(22) =129a(23) =130a(24) =131a(25) =192a(26) =193a(27) =194a(28) =201a(29) =202