Floor((Pentanacci ratio)^n).

Terms

a(0) =1a(1) =3a(2) =7a(3) =14a(4) =29a(5) =57a(6) =113a(7) =223a(8) =438a(9) =862a(10) =1695a(11) =3333a(12) =6552a(13) =12882a(14) =25326a(15) =49791a(16) =97887a(17) =192440a(18) =378328a(19) =743774a(20) =1462223a(21) =2874655a(22) =5651422a(23) =11110404a(24) =21842481a(25) =42941187a(26) =84420150a(27) =165965646a(28) =326279870a(29) =641449337