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, 0), (-1, 1, -1), (-1, 1, 1), (1, 0, 1), (1, 1, 0)}.
A150701
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, 0), (-1, 1, -1), (-1, 1, 1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =26a(4) =120a(5) =445a(6) =2139a(7) =8438a(8) =41253a(9) =168678a(10) =831824a(11) =3482570a(12) =17256533a(13) =73476232a(14) =365132217a(15) =1574583781a(16) =7839012305a(17) =34143715987a(18) =170188243145a(19) =747282889439
External references
- oeis: A150701