Powers of fifth root of 15 rounded down.

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =8a(5) =15a(6) =25a(7) =44a(8) =76a(9) =130a(10) =225a(11) =386a(12) =664a(13) =1142a(14) =1963a(15) =3375a(16) =5800a(17) =9970a(18) =17136a(19) =29454a(20) =50625a(21) =87012a(22) =149555a(23) =257051a(24) =441812a(25) =759375a(26) =1305192a(27) =2243328a(28) =3855769a(29) =6627188