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), (0, 0, 1), (1, 0, -1), (1, 1, 0)}.
A150485
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), (0, 0, 1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =100a(5) =411a(6) =1762a(7) =7684a(8) =34263a(9) =154390a(10) =705455a(11) =3245690a(12) =15075629a(13) =70363983a(14) =330663437a(15) =1559532714a(16) =7392718601a(17) =35142810992a(18) =167708548701a(19) =802144487018
External references
- oeis: A150485