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, 1), (0, 1, 0), (1, -1, 1), (1, 0, 0)}.
A150093
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, 1), (0, 1, 0), (1, -1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =19a(4) =66a(5) =246a(6) =959a(7) =3821a(8) =15516a(9) =64222a(10) =269701a(11) =1147397a(12) =4920972a(13) =21274085a(14) =92683938a(15) =406473019a(16) =1792230903a(17) =7938032686a(18) =35313624670a(19) =157740457577a(20) =707180810177
External references
- oeis: A150093