Coordination sequence T2 for Keatite.

Terms

a(0) =1a(1) =4a(2) =12a(3) =29a(4) =50a(5) =82a(6) =116a(7) =156a(8) =202a(9) =262a(10) =320a(11) =395a(12) =465a(13) =543a(14) =636a(15) =723a(16) =827a(17) =933a(18) =1043a(19) =1170a(20) =1294a(21) =1423a(22) =1570a(23) =1701a(24) =1869a(25) =2015a(26) =2189a(27) =2356a(28) =2538a(29) =2716