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, 0, 1), (0, 1, 0), (1, 0, 0)}.
A151032
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, 0, 1), (0, 1, 0), (1, 0, 0)}.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =29a(4) =105a(5) =401a(6) =1565a(7) =6235a(8) =25435a(9) =105201a(10) =440165a(11) =1861067a(12) =7942453a(13) =34118021a(14) =147539839a(15) =641724317a(16) =2805400805a(17) =12314901173a(18) =54284939599a(19) =240146460337
External references
- oeis: A151032