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), (0, 0, 1), (0, 1, -1), (1, 0, 1), (1, 1, -1)}.
A150710
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), (0, 0, 1), (0, 1, -1), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =27a(4) =116a(5) =475a(6) =2093a(7) =9225a(8) =41812a(9) =190557a(10) =881483a(11) =4100209a(12) =19231374a(13) =90670058a(14) =429730691a(15) =2044916451a(16) =9768824521a(17) =46811676808a(18) =224969448854
External references
- oeis: A150710