a(n) = the multiple of n which is > (sum{k=1 to n-1} a(k)) and is <= (n + sum{k=1 to n-1} a(k)).

Terms

a(0) =1a(1) =2a(2) =6a(3) =12a(4) =25a(5) =48a(6) =98a(7) =200a(8) =396a(9) =790a(10) =1584a(11) =3168a(12) =6331a(13) =12670a(14) =25335a(15) =50672a(16) =101354a(17) =202698a(18) =405403a(19) =810800a(20) =1621599a(21) =3243196a(22) =6486391a(23) =12972792a(24) =25945575a(25) =51891164a(26) =103782330a(27) =207564644a(28) =415129287a(29) =830258580