Number of 6-cycles in the n-tetrahedral graph.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =920a(5) =17760a(6) =122640a(7) =537040a(8) =1794240a(9) =4994640a(10) =12178320a(11) =26840880a(12) =54620280a(13) =104184080a(14) =188348160a(15) =325459680a(16) =541078720a(17) =869994720a(18) =1358615520a(19) =2067768480a(20) =3075954840a(21) =4483100160a(22) =6414845360a(23) =9027424560a(24) =12513177600a(25) =17106746800a(26) =23092009200