Number of walks on cubic lattice starting at (0,0,0), ending at (0,0,n), remaining in the first (nonnegative) octant and using steps which are permutations of (-2,1,2), (-1,0,2), (-1,1,1), (0,0,1).
A328267
Number of walks on cubic lattice starting at (0,0,0), ending at (0,0,n), remaining in the first (nonnegative) octant and using steps which are permutations of (-2,1,2), (-1,0,2), (-1,1,1), (0,0,1).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =9a(4) =45a(5) =243a(6) =1611a(7) =11565a(8) =92169a(9) =782775a(10) =7078995a(11) =67106313a(12) =663693597a(13) =6797495115a(14) =71796341151a(15) =778700005929
External references
- oeis: A328267