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, 0, 1), (0, -1, 1), (1, 1, -1), (1, 1, 0), (1, 1, 1)}.
A151012
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, 0, 1), (0, -1, 1), (1, 1, -1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =39a(4) =181a(5) =864a(6) =4167a(7) =20276a(8) =99611a(9) =490674a(10) =2425351a(11) =12026527a(12) =59713601a(13) =296903002a(14) =1478237657a(15) =7364664103a(16) =36715516955a(17) =183156337486a(18) =913991473905
External references
- oeis: A151012