Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1,0,1), (1,-1,1), (1,0,0), (1,1,-1), (1,1,1)}.
A150888
Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1,0,1), (1,-1,1), (1,0,0), (1,1,-1), (1,1,1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =33a(4) =152a(5) =703a(6) =3363a(7) =16123a(8) =78405a(9) =382031a(10) =1874728a(11) =9214167a(12) =45464404a(13) =224599699a(14) =1112123401a(15) =5511828827a(16) =27357175892a(17) =135878942511a(18) =675540367558
External references
- oeis: A150888