OFFSET
0,3
COMMENTS
Also the number of (4*n-1)-step walks on n-dimensional cubic lattice from (1,0,...,0) to (4,4,...,4) with positive unit steps in all dimensions such that for each point (p_1,p_2,...,p_n) we have p_1<=p_2<=...<=p_n or p_1>=p_2>=...>=p_n.
CROSSREFS
KEYWORD
nonn,walk
AUTHOR
Alois P. Heinz, Feb 29 2012
STATUS
approved