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, 1, -1), (0, 1, 1), (1, -1, 0), (1, 1, 0)}.
A150440
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, 1, -1), (0, 1, 1), (1, -1, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =101a(5) =397a(6) =1778a(7) =7484a(8) =34322a(9) =150919a(10) =701487a(11) =3168946a(12) =14890454a(13) =68431194a(14) =324357404a(15) =1509061090a(16) =7199087365a(17) =33815937128a(18) =162104995519a(19) =767258437973
External references
- oeis: A150440