Numbers whose base-3 representation contains exactly four 0's and four 1's.

Terms

a(0) =2200a(1) =2218a(2) =2224a(3) =2226a(4) =2272a(5) =2278a(6) =2280a(7) =2296a(8) =2298a(9) =2304a(10) =2434a(11) =2440a(12) =2442a(13) =2458a(14) =2460a(15) =2466a(16) =2512a(17) =2514a(18) =2520a(19) =2538a(20) =2920a(21) =2926a(22) =2928a(23) =2944a(24) =2946a(25) =2952a(26) =2998a(27) =3000a(28) =3006a(29) =3024