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, 1), (-1, 0, 0), (0, -1, 1), (0, 1, -1), (1, 1, 1)}.
A149700
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, 1), (-1, 0, 0), (0, -1, 1), (0, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =17a(4) =69a(5) =277a(6) =1175a(7) =4991a(8) =21707a(9) =95019a(10) =420485a(11) =1872483a(12) =8392935a(13) =37803043a(14) =171044287a(15) =776817969a(16) =3540037073a(17) =16179841235a(18) =74148407971a(19) =340610270961
External references
- oeis: A149700