28878

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), (0, 0, -1), (1, -1, 1), (1, 1, 0)}.at n=9A149193
• Number of length 5+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third.at n=28A248438
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 246", based on the 5-celled von Neumann neighborhood.at n=39A271010