Number of elements of GF(3^n) with trace 0 and subtrace 1.

Terms

a(0) =0a(1) =2a(2) =0a(3) =12a(4) =30a(5) =72a(6) =252a(7) =702a(8) =2268a(9) =6480a(10) =19602a(11) =59292a(12) =176904a(13) =532170a(14) =1592136a(15) =4785156a(16) =14351094a(17) =43040160a(18) =129146724a(19) =387400806a(20) =1162320516