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, 0, -1), (0, 1, 0), (1, -1, 0)}.
A148187
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, 0, -1), (0, 1, 0), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =12a(5) =30a(6) =93a(7) =267a(8) =883a(9) =2804a(10) =9586a(11) =32445a(12) =114178a(13) =404537a(14) =1462307a(15) =5349537a(16) =19800648a(17) =74146404a(18) =280190689a(19) =1068734524a(20) =4110516365a(21) =15922071713a(22) =62145913561a(23) =243952955828a(24) =964002185825
External references
- oeis: A148187