a(n) = ceiling(n*phi^20), where phi is the golden ratio, A001622.

Terms

a(0) =0a(1) =15127a(2) =30254a(3) =45381a(4) =60508a(5) =75635a(6) =90762a(7) =105889a(8) =121016a(9) =136143a(10) =151270a(11) =166397a(12) =181524a(13) =196651a(14) =211778a(15) =226905a(16) =242032a(17) =257159a(18) =272286a(19) =287413a(20) =302540a(21) =317667a(22) =332794a(23) =347921a(24) =363048a(25) =378175a(26) =393302a(27) =408429a(28) =423556a(29) =438683