78405

Appears in sequences

• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1,0,1), (1,-1,1), (1,0,0), (1,1,-1), (1,1,1)}.at n=8A150888
• a(n) = 2^n + binomial(n, floor(n/2)) - 1.at n=16A261681