Sizes of clusters in hexagonal lattice A_2 with 3-fold symmetry.

Terms

a(0) =1a(1) =3a(2) =6a(3) =7a(4) =12a(5) =13a(6) =18a(7) =19a(8) =21a(9) =27a(10) =30a(11) =31a(12) =36a(13) =37a(14) =42a(15) =43a(16) =48a(17) =54a(18) =55a(19) =61a(20) =63a(21) =69a(22) =73a(23) =75a(24) =78a(25) =84a(26) =85a(27) =90a(28) =91a(29) =96