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, 0), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.
A150754
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, 0), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =129a(5) =535a(6) =2481a(7) =10920a(8) =51623a(9) =234730a(10) =1122285a(11) =5207410a(12) =25086020a(13) =118006138a(14) =571525224a(15) =2715031975a(16) =13201588382a(17) =63175979381a(18) =308125926722
External references
- oeis: A150754