Concatenate rows of triangle in A028364 (removing duplicates).

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =5a(5) =7a(6) =9a(7) =14a(8) =19a(9) =23a(10) =28a(11) =42a(12) =56a(13) =66a(14) =76a(15) =90a(16) =132a(17) =174a(18) =202a(19) =227a(20) =255a(21) =297a(22) =429a(23) =561a(24) =645a(25) =715a(26) =785a(27) =869a(28) =1001a(29) =1430