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, 0, 0), (0, 0, 1), (1, -1, 1), (1, 1, -1)}.
A148467
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, 0, 0), (0, 0, 1), (1, -1, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =19a(5) =63a(6) =228a(7) =849a(8) =3279a(9) =12970a(10) =52391a(11) =215143a(12) =896069a(13) =3776720a(14) =16080646a(15) =69082912a(16) =299088374a(17) =1303775401a(18) =5718074120a(19) =25214654439a(20) =111731999692a(21) =497294169489
External references
- oeis: A148467