310840

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 1/3 of the elements are <= sqrt(n).at n=23A048094
• 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, -1, 0), (-1, 1, 1), (0, 0, 1), (0, 1, 1), (1, 0, -1)}.at n=10A150114