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, -1, 0), (0, 1, 1), (1, 1, 0)}.
A150465
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, -1, 0), (0, 1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =98a(5) =384a(6) =1597a(7) =6670a(8) =28408a(9) =122197a(10) =532921a(11) =2337294a(12) =10329095a(13) =45940042a(14) =205457964a(15) =922539912a(16) =4160226856a(17) =18832804377a(18) =85520622884a(19) =389438385157
External references
- oeis: A150465