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), (0, 1, 1), (1, 0, 0), (1, 1, -1)}.
A150292
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), (0, 1, 1), (1, 0, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =23a(4) =93a(5) =397a(6) =1743a(7) =7835a(8) =35746a(9) =165186a(10) =770599a(11) =3622718a(12) =17138997a(13) =81505690a(14) =389304925a(15) =1866373874a(16) =8976096969a(17) =43288108887a(18) =209262664063
External references
- oeis: A150292