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, 0, 1), (1, 0, 0), (1, 1, 0)}.
A151091
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, 0, 1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =43a(4) =175a(5) =748a(6) =3246a(7) =14398a(8) =64716a(9) =293774a(10) =1347859a(11) =6222080a(12) =28924175a(13) =135162346a(14) =634412602a(15) =2990818509a(16) =14145814414a(17) =67128767600a(18) =319445828807
External references
- oeis: A151091