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, -1, 1), (1, 0, 1), (1, 1, 0)}.
A150524
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, -1, 1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =104a(5) =427a(6) =1899a(7) =8291a(8) =38116a(9) =172204a(10) =807165a(11) =3725853a(12) =17684156a(13) =82829235a(14) =396549703a(15) =1876918889a(16) =9042415994a(17) =43135495220a(18) =208799652974
External references
- oeis: A150524