Minimal span of set of n elements with no 3-term arithmetic progression.

Terms

a(0) =0a(1) =1a(2) =3a(3) =4a(4) =8a(5) =10a(6) =12a(7) =13a(8) =19a(9) =23a(10) =25a(11) =29a(12) =31a(13) =35a(14) =39a(15) =40a(16) =50a(17) =53a(18) =57a(19) =62a(20) =70a(21) =73a(22) =81a(23) =83a(24) =91a(25) =94a(26) =99a(27) =103a(28) =110a(29) =113