Number of 5-cycles in the n-tetrahedral graph.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =312a(5) =3024a(6) =14868a(7) =51744a(8) =145152a(9) =350784a(10) =759528a(11) =1511136a(12) =2810808a(13) =4948944a(14) =8324316a(15) =13470912a(16) =21088704a(17) =32078592a(18) =47581776a(19) =69023808a(20) =98163576a(21) =137147472a(22) =188568996a(23) =255534048a(24) =341732160a(25) =451513920a(26) =589974840a(27) =763045920a(28) =977591160a(29) =1241512272