A trace sequence for a Napoleon graph.

Terms

a(0) =1a(1) =0a(2) =3a(3) =4a(4) =21a(5) =55a(6) =198a(7) =609a(8) =2021a(9) =6460a(10) =21033a(11) =67859a(12) =219926a(13) =711165a(14) =2302233a(15) =7448804a(16) =24107061a(17) =78008495a(18) =252446598a(19) =816924969a(20) =2643639901a(21) =8554973900a(22) =27684516753a(23) =89588913979a(24) =289915919446a(25) =938187455205