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, 1, 0), (0, 1, 0), (1, 0, 1), (1, 1, -1)}.
A150295
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, 1, 0), (0, 1, 0), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =23a(4) =95a(5) =404a(6) =1772a(7) =7929a(8) =36069a(9) =166206a(10) =773209a(11) =3624790a(12) =17102065a(13) =81114678a(14) =386455320a(15) =1848256530a(16) =8868663304a(17) =42677840782a(18) =205893327059a(19) =995519646831
External references
- oeis: A150295