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, 0), (0, -1, 1), (0, 0, 1), (1, 0, -1), (1, 1, 1)}.
A150866
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, 0), (0, -1, 1), (0, 0, 1), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =33a(4) =144a(5) =644a(6) =2945a(7) =13646a(8) =63945a(9) =302020a(10) =1435617a(11) =6859049a(12) =32909060a(13) =158447592a(14) =765143817a(15) =3704246334a(16) =17972416827a(17) =87365730777a(18) =425406479062
External references
- oeis: A150866