Chromatic invariant of the n-antiprism graph.

Terms

a(0) =0a(1) =2a(2) =11a(3) =38a(4) =112a(5) =309a(6) =828a(7) =2190a(8) =5759a(9) =15106a(10) =39580a(11) =103657a(12) =271416a(13) =710618a(14) =1860467a(15) =4870814a(16) =12752008a(17) =33385245a(18) =87403764a(19) =228826086a(20) =599074535a(21) =1568397562a(22) =4106118196a(23) =10749957073a(24) =28143753072a(25) =73681302194a(26) =192900153563a(27) =505019158550