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, -1)}.
A148382
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, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =16a(5) =49a(6) =171a(7) =609a(8) =2256a(9) =8551a(10) =33397a(11) =131427a(12) =529260a(13) =2149049a(14) =8851768a(15) =36730319a(16) =154130790a(17) =650143287a(18) =2767497613a(19) =11832774631a(20) =50953284486a(21) =220254234487a(22) =957671050740
External references
- oeis: A148382