a(n) = 19683*n - 13716.

Terms

a(0) =5967a(1) =25650a(2) =45333a(3) =65016a(4) =84699a(5) =104382a(6) =124065a(7) =143748a(8) =163431a(9) =183114a(10) =202797a(11) =222480a(12) =242163a(13) =261846a(14) =281529a(15) =301212a(16) =320895a(17) =340578a(18) =360261a(19) =379944a(20) =399627a(21) =419310a(22) =438993a(23) =458676a(24) =478359a(25) =498042a(26) =517725a(27) =537408a(28) =557091a(29) =576774