Powers of fourth root of 3 rounded down.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =3a(6) =5a(7) =6a(8) =9a(9) =11a(10) =15a(11) =20a(12) =27a(13) =35a(14) =46a(15) =61a(16) =81a(17) =106a(18) =140a(19) =184a(20) =243a(21) =319a(22) =420a(23) =553a(24) =729a(25) =959a(26) =1262a(27) =1661a(28) =2187a(29) =2878