a(n) = round(n*phi^5), where phi is the golden ratio, A001622.

Terms

a(0) =0a(1) =11a(2) =22a(3) =33a(4) =44a(5) =55a(6) =67a(7) =78a(8) =89a(9) =100a(10) =111a(11) =122a(12) =133a(13) =144a(14) =155a(15) =166a(16) =177a(17) =189a(18) =200a(19) =211a(20) =222a(21) =233a(22) =244a(23) =255a(24) =266a(25) =277a(26) =288a(27) =299a(28) =311a(29) =322