43552

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, 1, -1), (0, 1, 1), (1, -1, 1), (1, 1, -1)}.at n=9A149024
• Number of (n+1) X 4 binary arrays with consecutive windows of two bits considered as a binary number nondecreasing in every row and column.at n=22A202330
• G.f. A(x) satisfies A(x) = (1 + x)^2 + x*A(x)^2 / (1 + x).at n=9A367639