a(n) = [ a(n-1)/a(1) ] + [ a(n-2)/a(2) ] + ... + [ a(1)/a(n-1) ], for n >= 3.

Terms

a(0) =2a(1) =1a(2) =2a(3) =3a(4) =3a(5) =5a(6) =6a(7) =10a(8) =15a(9) =22a(10) =34a(11) =52a(12) =80a(13) =124a(14) =190a(15) =294a(16) =452a(17) =700a(18) =1081a(19) =1672a(20) =2585a(21) =3996a(22) =6182a(23) =9560a(24) =14786a(25) =22872a(26) =35375a(27) =54718a(28) =84636a(29) =130916