Number of dihedral Carlitz compositions of n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =3a(5) =5a(6) =6a(7) =9a(8) =14a(9) =20a(10) =29a(11) =48a(12) =69a(13) =110a(14) =175a(15) =278a(16) =441a(17) =725a(18) =1168a(19) =1928a(20) =3170a(21) =5253a(22) =8710a(23) =14563a(24) =24308a(25) =40798a(26) =68520a(27) =115433a(28) =194611a(29) =328938