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), (1, -1, 0), (1, 0, -1), (1, 1, 1)}.
A151009
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), (1, -1, 0), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =39a(4) =175a(5) =816a(6) =3873a(7) =18546a(8) =89585a(9) =435652a(10) =2128065a(11) =10432329a(12) =51295715a(13) =252813922a(14) =1248362621a(15) =6174100841a(16) =30576404553a(17) =151594186090a(18) =752300064451
External references
- oeis: A151009