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), (-1, 1, 1), (1, -1, 0), (1, 0, 1), (1, 1, -1)}.
A149479
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), (-1, 1, 1), (1, -1, 0), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =13a(4) =57a(5) =224a(6) =1038a(7) =4459a(8) =21206a(9) =95450a(10) =460768a(11) =2133473a(12) =10395594a(13) =49032011a(14) =240409450a(15) =1148482686a(16) =5655779024a(17) =27268079722a(18) =134709037376a(19) =653917834101
External references
- oeis: A149479