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), (0, 0, 1), (1, -1, 0), (1, 1, 0)}.
A150166
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), (0, 0, 1), (1, -1, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =20a(4) =75a(5) =294a(6) =1201a(7) =5078a(8) =21848a(9) =95576a(10) =424532a(11) =1906655a(12) =8636683a(13) =39450664a(14) =181496328a(15) =839654187a(16) =3904476015a(17) =18243215608a(18) =85580996797a(19) =402880951625
External references
- oeis: A150166