a(n) = 3*A146085(n) - 1.

Terms

a(0) =2a(1) =11a(2) =20a(3) =83a(4) =92a(5) =101a(6) =164a(7) =173a(8) =182a(9) =731a(10) =740a(11) =749a(12) =812a(13) =821a(14) =830a(15) =893a(16) =902a(17) =911a(18) =1460a(19) =1469a(20) =1478a(21) =1541a(22) =1550a(23) =1559a(24) =1622a(25) =1631a(26) =1640a(27) =6563a(28) =6572a(29) =6581