Powers of fourth root of 7 rounded up.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =7a(5) =12a(6) =19a(7) =31a(8) =49a(9) =80a(10) =130a(11) =211a(12) =343a(13) =558a(14) =908a(15) =1477a(16) =2401a(17) =3906a(18) =6353a(19) =10333a(20) =16807a(21) =27338a(22) =44468a(23) =72330a(24) =117649a(25) =191366a(26) =311270a(27) =506305a(28) =823543a(29) =1339556