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), (1, 0, -1), (1, 0, 1), (1, 1, 0)}.
A150743
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), (1, 0, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =125a(5) =520a(6) =2354a(7) =10373a(8) =48113a(9) =219149a(10) =1032413a(11) =4798763a(12) =22844206a(13) =107661986a(14) =516385175a(15) =2457653482a(16) =11854293811a(17) =56833081977a(18) =275327363426
External references
- oeis: A150743