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, 0), (-1, 1, 0), (0, 1, 0), (1, 0, -1), (1, 1, 1)}.
A150606
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, 0), (-1, 1, 0), (0, 1, 0), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =111a(5) =470a(6) =2029a(7) =8960a(8) =40297a(9) =182778a(10) =836559a(11) =3855341a(12) =17894213a(13) =83532220a(14) =391593043a(15) =1843022301a(16) =8705626983a(17) =41256214000a(18) =196078437757a(19) =934180171615
External references
- oeis: A150606