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, 1), (0, 1, 0), (0, 1, 1), (1, -1, 1), (1, 1, -1)}.
A150643
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, 1), (0, 1, 0), (0, 1, 1), (1, -1, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =117a(5) =524a(6) =2426a(7) =11426a(8) =54567a(9) =262976a(10) =1276549a(11) =6229483a(12) =30526069a(13) =150072090a(14) =739706710a(15) =3653663305a(16) =18077660610a(17) =89571457084a(18) =444331922248
External references
- oeis: A150643