a(n) = floor(r^n) where r is the smallest Pisot number (real root r=1.3247179... of x^3-x-1).

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =4a(6) =5a(7) =7a(8) =9a(9) =12a(10) =16a(11) =22a(12) =29a(13) =38a(14) =51a(15) =67a(16) =89a(17) =119a(18) =157a(19) =209a(20) =276a(21) =366a(22) =486a(23) =643a(24) =853a(25) =1130a(26) =1496a(27) =1983a(28) =2626a(29) =3480