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), (0, 1, -1), (0, 1, 1), (1, 0, 1), (1, 1, -1)}.
A150758
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), (0, 1, -1), (0, 1, 1), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =136a(5) =569a(6) =2745a(7) =12313a(8) =60047a(9) =278785a(10) =1370631a(11) =6489242a(12) =32063338a(13) =153792544a(14) =762138261a(15) =3688921333a(16) =18318089997a(17) =89237992514a(18) =443789885981
External references
- oeis: A150758