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, 0, 0), (1, 0, -1), (1, 0, 0), (1, 1, 1)}.
A150779
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, 0, 0), (1, 0, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =30a(4) =132a(5) =551a(6) =2514a(7) =11092a(8) =51627a(9) =234627a(10) =1105768a(11) =5121388a(12) =24346919a(13) =114229926a(14) =546518153a(15) =2588237982a(16) =12443907305a(17) =59350043417a(18) =286458618532
External references
- oeis: A150779