OFFSET
1,4
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
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Aug 01 2012
STATUS
approved