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, 0, 1), (0, 1, -1), (0, 1, 1), (1, -1, 1), (1, 1, 1)}.
A151006
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, 0, 1), (0, 1, -1), (0, 1, 1), (1, -1, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =38a(4) =178a(5) =829a(6) =3985a(7) =19172a(8) =93475a(9) =456401a(10) =2243083a(11) =11038606a(12) =54518642a(13) =269545431a(14) =1335511194a(15) =6622479922a(16) =32883598083a(17) =163386581986a(18) =812535534622
External references
- oeis: A151006