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, 0, 0), (0, 1, -1), (1, 0, 1), (1, 1, 0)}.
A150736
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, 0, 0), (0, 1, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =122a(5) =516a(6) =2252a(7) =10061a(8) =45338a(9) =207471a(10) =956325a(11) =4442616a(12) =20775644a(13) =97621228a(14) =460944623a(15) =2184762361a(16) =10390395273a(17) =49569323130a(18) =237091907445
External references
- oeis: A150736