Sizes of clusters in hexagonal lattice A_2 centered at lattice point.

Terms

a(0) =1a(1) =7a(2) =13a(3) =19a(4) =31a(5) =37a(6) =43a(7) =55a(8) =61a(9) =73a(10) =85a(11) =91a(12) =97a(13) =109a(14) =121a(15) =127a(16) =139a(17) =151a(18) =163a(19) =169a(20) =187a(21) =199a(22) =211a(23) =223a(24) =235a(25) =241a(26) =253a(27) =265a(28) =271a(29) =283