a(n) = Sum_{k >= 1} floor(n*phi^(3-k)).

Terms

a(0) =4a(1) =11a(2) =16a(3) =23a(4) =31a(5) =36a(6) =44a(7) =49a(8) =57a(9) =64a(10) =69a(11) =77a(12) =85a(13) =91a(14) =98a(15) =103a(16) =111a(17) =119a(18) =124a(19) =131a(20) =137a(21) =145a(22) =153a(23) =158a(24) =165a(25) =173a(26) =178a(27) =186a(28) =191a(29) =200