Sum of n and floor of each previous term divided by its distance from n.

Terms

a(0) =1a(1) =3a(2) =6a(3) =11a(4) =20a(5) =33a(6) =54a(7) =87a(8) =142a(9) =226a(10) =360a(11) =571a(12) =907a(13) =1438a(14) =2278a(15) =3606a(16) =5708a(17) =9032a(18) =14293a(19) =22614a(20) =35778a(21) =56604a(22) =89550a(23) =141670a(24) =224122a(25) =354560a(26) =560907a(27) =887348a(28) =1403768a(29) =2220731