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, 0), (0, -1, 0), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.
A150462
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, 0), (0, -1, 0), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =97a(5) =395a(6) =1656a(7) =7111a(8) =31121a(9) =138160a(10) =620607a(11) =2815358a(12) =12877034a(13) =59308609a(14) =274808389a(15) =1280010537a(16) =5989374853a(17) =28138534014a(18) =132672773442a(19) =627562862717
External references
- oeis: A150462