OFFSET
0,1
COMMENTS
For n=0, the two sets are the empty set and a set containing a single isolated vertex. - Sean A. Irvine, Nov 23 2019
LINKS
R. M. Falcon, Enumeration and classification of self-orthogonal partial latin rectangles by using the polynomial method, Eur. J. Comb. 48 (2015) 215-223, Table 1.
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
EXTENSIONS
a(0) corrected by Sean A. Irvine, Nov 23 2019
STATUS
approved