OFFSET
2,2
LINKS
Laura Florescu, Daniela Morar, David Perkinson, Nicholas Salter, Tianyuan Xu, Sandpiles and Dominos, Electronic Journal of Combinatorics, Volume 22(1), 2015.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Mar 15 2015
STATUS
approved