Number of (directed) Hamiltonian paths in the n-Möbius ladder graph.

Terms

a(0) =72a(1) =144a(2) =280a(3) =456a(4) =728a(5) =1056a(6) =1512a(7) =2040a(8) =2728a(9) =3504a(10) =4472a(11) =5544a(12) =6840a(13) =8256a(14) =9928a(15) =11736a(16) =13832a(17) =16080a(18) =18648a(19) =21384a(20) =24472a(21) =27744a(22) =31400a(23) =35256a(24) =39528a(25) =44016a(26) =48952a(27) =54120a(28) =59768a(29) =65664