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, 0, 1), (0, 1, 0), (1, -1, 1), (1, 1, -1)}.
A150268
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, 0, 1), (0, 1, 0), (1, -1, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =22a(4) =89a(5) =382a(6) =1702a(7) =7781a(8) =36229a(9) =170985a(10) =815280a(11) =3918288a(12) =18949282a(13) =92098505a(14) =449432199a(15) =2200447618a(16) =10803036616a(17) =53158537133a(18) =262081270998
External references
- oeis: A150268