Powers of fourth root of 15 rounded down.

Terms

a(0) =1a(1) =1a(2) =3a(3) =7a(4) =15a(5) =29a(6) =58a(7) =114a(8) =225a(9) =442a(10) =871a(11) =1714a(12) =3375a(13) =6641a(14) =13071a(15) =25724a(16) =50625a(17) =99629a(18) =196069a(19) =385863a(20) =759375a(21) =1494442a(22) =2941046a(23) =5787949a(24) =11390625a(25) =22416632a(26) =44115700a(27) =86819243a(28) =170859375