Numbers k so that the binary expansion of 3^k starts with the binary expansion of k.

Terms

a(0) =1a(1) =2a(2) =3a(3) =9a(4) =27a(5) =65a(6) =95a(7) =123a(8) =163a(9) =303a(10) =451a(11) =597a(12) =760a(13) =1757a(14) =2546a(15) =2700a(16) =7142a(17) =25030a(18) =25719a(19) =25772a(20) =49105a(21) =61426a(22) =90981a(23) =107497a(24) =194210a(25) =659077a(26) =6732590a(27) =8513462a(28) =9344030a(29) =14549893