Powers of sqrt(5) - 1 rounded down.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =3a(6) =4a(7) =5a(8) =6a(9) =8a(10) =10a(11) =12a(12) =15a(13) =19a(14) =24a(15) =29a(16) =36a(17) =45a(18) =56a(19) =69a(20) =85a(21) =105a(22) =130a(23) =161a(24) =200a(25) =247a(26) =305a(27) =377a(28) =466a(29) =577