45069

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, -1, 0), (-1, 0, 0), (-1, 1, 0), (0, 0, -1), (1, 1, 1)}.at n=9A149576
• Number of nondecreasing -n..n vectors of length 4 whose dot product with some other -n..n vector equals 4.at n=14A226343
• Composite x such that [(x-1)' + (x+1)'] / x' is an integer, where x' is the arithmetic derivative of x.at n=5A246769