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, 1), (-1, 0, 0), (0, 0, -1), (0, 1, 1), (1, 0, 1)}.
A150467
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, 1), (-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) =1627a(7) =6860a(8) =29349a(9) =126916a(10) =554542a(11) =2441671a(12) =10821253a(13) =48242580a(14) =216133921a(15) =972469535a(16) =4392665982a(17) =19909498340a(18) =90514195277a(19) =412656103177
External references
- oeis: A150467