OFFSET
0,2
COMMENTS
a(n) is also the number of (i*k-1)-step walks (for all i,k>=0, i+k=n) on k-dimensional cubic lattice from (1,0,...,0) to (i,i,...,i) with positive unit steps in all dimensions such that for each point (p_1,p_2,...,p_k) we have p_1<=p_2<=...<=p_k or p_1>=p_2>=...>=p_k.
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..25
CROSSREFS
KEYWORD
nonn,walk
AUTHOR
Alois P. Heinz, Mar 01 2012
STATUS
approved