Number of (undirected) cycles in the n-th order antiprism graph.

Terms

a(0) =63a(1) =179a(2) =523a(3) =1619a(4) =5239a(5) =17379a(6) =58323a(7) =196691a(8) =664623a(9) =2247443a(10) =7601883a(11) =25715603a(12) =86993639a(13) =294295491a(14) =995592355a(15) =3368062355a(16) =11394070559a(17) =38545861491a(18) =130399711915a(19) =441139061715