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, 0), (0, 0, -1), (0, 1, 1), (1, 0, 1)}.
A150466
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, 0), (0, 0, -1), (0, 1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =98a(5) =394a(6) =1617a(7) =6840a(8) =29159a(9) =126045a(10) =550672a(11) =2420582a(12) =10729946a(13) =47806495a(14) =214055169a(15) =963168698a(16) =4348748489a(17) =19708121976a(18) =89593683082a(19) =408382747758
External references
- oeis: A150466