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, 0, 1), (0, 1, -1), (1, -1, -1), (1, 0, 0)}.
A148082
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, 0, 1), (0, 1, -1), (1, -1, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =24a(6) =65a(7) =197a(8) =590a(9) =1831a(10) =5907a(11) =19246a(12) =65628a(13) =223075a(14) =772202a(15) =2715962a(16) =9613099a(17) =34850427a(18) =126250204a(19) =462501869a(20) =1709044861a(21) =6342910025a(22) =23890157291a(23) =89977511284a(24) =341462174862
External references
- oeis: A148082