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), (-1, 1, 0), (1, -1, 0), (1, 1, 0)}.
A149282
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), (-1, 1, 0), (1, -1, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =44a(5) =143a(6) =611a(7) =2163a(8) =9630a(9) =35865a(10) =163797a(11) =633361a(12) =2935662a(13) =11687995a(14) =54690772a(15) =222657047a(16) =1049628640a(17) =4346023981a(18) =20619536561a(19) =86505774633a(20) =412674097142
External references
- oeis: A149282