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, 1), (0, 1, -1), (1, 0, 1), (1, 1, 0)}.
A150776
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, 1), (0, 1, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =30a(4) =130a(5) =564a(6) =2548a(7) =11632a(8) =53966a(9) =252352a(10) =1190264a(11) =5645555a(12) =26918817a(13) =128873295a(14) =619197406a(15) =2983890805a(16) =14417128774a(17) =69815452709a(18) =338760986580
External references
- oeis: A150776