3,1
Table of n, a(n) for n=3..10.
B. A. Burton, Enumeration of non-orientable 3-manifolds using face-pairing graphs and union-find, Discrete and Computational Geometry, 38 (2007), 527-571.
Sequence in context: A004651 A283835 A244933 * A187813 A038024 A337500
Adjacent sequences: A118557 A118558 A118559 * A118561 A118562 A118563
nonn,more
N. J. A. Sloane, Oct 01 2007
approved