References to A148679

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, -1), (-1, -1, 1), (-1, 1, 0), (0, 0, -1), (1, 0, 1)}
1, 1, 3, 7, 21, 73, 229, 777, 2687, 9531, 35431, 128883, 478235, 1784839, 6775523

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