Monotonic ordering of nonnegative differences 6^i-3^j, for 40>= i>=0, j>=0.

Terms

a(0) =0a(1) =3a(2) =5a(3) =9a(4) =27a(5) =33a(6) =35a(7) =135a(8) =189a(9) =207a(10) =213a(11) =215a(12) =567a(13) =1053a(14) =1215a(15) =1269a(16) =1287a(17) =1293a(18) =1295a(19) =5589a(20) =7047a(21) =7533a(22) =7695a(23) =7749a(24) =7767a(25) =7773a(26) =7775a(27) =26973a(28) =40095a(29) =44469