Exponents of x in the numerator of cluster variables of a rank 2 cluster algebra.

Terms

a(0) =0a(1) =3a(2) =6a(3) =15a(4) =24a(5) =57a(6) =90a(7) =213a(8) =336a(9) =795a(10) =1254a(11) =2967a(12) =4680a(13) =11073a(14) =17466a(15) =41325a(16) =65184a(17) =154227a(18) =243270a(19) =575583a(20) =907896a(21) =2148105a(22) =3388314a(23) =8016837a(24) =12645360a(25) =29919243a(26) =47193126a(27) =111660135a(28) =176127144a(29) =416721297