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, 1), (0, 1, -1), (1, 0, 1), (1, 1, 0)}.
A150843
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, 1), (0, 1, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =32a(4) =138a(5) =616a(6) =2816a(7) =13108a(8) =61764a(9) =293968a(10) =1409604a(11) =6800654a(12) =32970232a(13) =160487760a(14) =783813576a(15) =3838839984a(16) =18845981576a(17) =92707895520a(18) =456847371156
External references
- oeis: A150843