Number of abstract simplicial 2-complexes on {1,2,3,...,n+4} which triangulate a Moebius band in such a way that all vertices lie on the boundary and are traversed in the order 1,2,3,... as one goes around the boundary.
A007817
Number of abstract simplicial 2-complexes on {1,2,3,...,n+4} which triangulate a Moebius band in such a way that all vertices lie on the boundary and are traversed in the order 1,2,3,... as one goes around the boundary.
Terms
- a(0) =1a(1) =14a(2) =113a(3) =720a(4) =4033a(5) =20864a(6) =102356a(7) =483680a(8) =2223482a(9) =10009570a(10) =44330931a(11) =193798624a(12) =838329841a(13) =3595080184a(14) =15305823256a(15) =64766503744a(16) =272635026526
External references
- oeis: A007817