A215018 Number of unsensed hypermaps with n darts and any genus.

1, 3, 7, 26, 91, 490, 2785, 20434, 171579, 1671193, 18192737, 218487504

Offset: 1

Author

N. J. A. Sloane, Aug 01 2012

Keywords

• nonn
• more

Links

• Timothy R. Walsh, Space-efficient generation of nonisomorphic maps and hypermaps
• T. R. Walsh, Space-Efficient Generation of Nonisomorphic Maps and Hypermaps, J. Int. Seq. 18 (2015) # 15.4.3

Crossrefs

Cf. A090371, A118094, A214819, A214820, A057005; A214821-A214823, A215017, A215018.