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, 1), (0, 1, -1), (1, 0, 0), (1, 1, 1)}.
A150812
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, 1), (0, 1, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =31a(4) =134a(5) =594a(6) =2695a(7) =12443a(8) =58013a(9) =273231a(10) =1294901a(11) =6173085a(12) =29558960a(13) =142080867a(14) =685104615a(15) =3312474950a(16) =16053281812a(17) =77956368977a(18) =379237613129
External references
- oeis: A150812