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), (1, -1, 0), (1, 1, -1), (1, 1, 0)}.
A149212
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), (1, -1, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =10a(4) =40a(5) =138a(6) =569a(7) =2207a(8) =9475a(9) =38862a(10) =171853a(11) =731033a(12) =3296604a(13) =14403076a(14) =65845587a(15) =293512383a(16) =1355814054a(17) =6136514157a(18) =28582369960a(19) =130907882612a(20) =613896177053
External references
- oeis: A149212