Number of elements of GF(3^n) with trace 1 and subtrace 2.

Terms

a(0) =0a(1) =2a(2) =3a(3) =6a(4) =30a(5) =81a(6) =252a(7) =702a(8) =2187a(9) =6642a(10) =19602a(11) =59049a(12) =176904a(13) =532170a(14) =1594323a(15) =4780782a(16) =14351094a(17) =43046721a(18) =129146724a(19) =387400806a(20) =1162261467