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, 1, 1), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
A150965
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, 1, 1), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =35a(4) =167a(5) =732a(6) =3564a(7) =16437a(8) =80742a(9) =381990a(10) =1886365a(11) =9058918a(12) =44881863a(13) =217608631a(14) =1080496305a(15) =5273126110a(16) =26223071353a(17) =128577465870a(18) =640125864687
External references
- oeis: A150965