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, -1), (1, -1, 1), (1, 0, 0), (1, 1, 1)}.
A150883
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, -1), (1, -1, 1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =33a(4) =149a(5) =689a(6) =3259a(7) =15596a(8) =75353a(9) =366486a(10) =1791533a(11) =8791782a(12) =43276756a(13) =213542743a(14) =1055751847a(15) =5227922739a(16) =25921772174a(17) =128668445966a(18) =639255561410
External references
- oeis: A150883