The 60-degree spoke (or ray) of a hexagonal spiral of Ulam.

Terms

a(0) =1a(1) =10a(2) =43a(3) =100a(4) =181a(5) =286a(6) =415a(7) =568a(8) =745a(9) =946a(10) =1171a(11) =1420a(12) =1693a(13) =1990a(14) =2311a(15) =2656a(16) =3025a(17) =3418a(18) =3835a(19) =4276a(20) =4741a(21) =5230a(22) =5743a(23) =6280a(24) =6841a(25) =7426a(26) =8035a(27) =8668a(28) =9325a(29) =10006