Number of complementary pairs of circulant digraphs on n nodes.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =4a(5) =10a(6) =8a(7) =23a(8) =27a(9) =70a(10) =56a(11) =312a(12) =180a(13) =700a(14) =1096a(15) =2131a(16) =2068a(17) =11020a(18) =7316a(19) =34008a(20) =44232a(21) =104968a(22) =95420a(23) =531296a(24) =419654a(25) =1398500a(26) =1864674a(27) =5638352a(28) =4794088a(29) =33597760