Sums of 4 distinct powers of 3.

Terms

a(0) =40a(1) =94a(2) =112a(3) =118a(4) =120a(5) =256a(6) =274a(7) =280a(8) =282a(9) =328a(10) =334a(11) =336a(12) =352a(13) =354a(14) =360a(15) =742a(16) =760a(17) =766a(18) =768a(19) =814a(20) =820a(21) =822a(22) =838a(23) =840a(24) =846a(25) =976a(26) =982a(27) =984a(28) =1000a(29) =1002