The 360 degree spoke (or ray) of a hexagonal spiral of Ulam.

Terms

a(0) =1a(1) =12a(2) =47a(3) =106a(4) =189a(5) =296a(6) =427a(7) =582a(8) =761a(9) =964a(10) =1191a(11) =1442a(12) =1717a(13) =2016a(14) =2339a(15) =2686a(16) =3057a(17) =3452a(18) =3871a(19) =4314a(20) =4781a(21) =5272a(22) =5787a(23) =6326a(24) =6889a(25) =7476a(26) =8087a(27) =8722a(28) =9381a(29) =10064