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, 1), (0, 1, 1), (1, 0, -1), (1, 1, 1)}.
A150838
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, 1), (0, 1, 1), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =32a(4) =137a(5) =608a(6) =2750a(7) =12637a(8) =58808a(9) =275862a(10) =1303674a(11) =6196533a(12) =29585580a(13) =141832464a(14) =682176597a(15) =3290368486a(16) =15910303667a(17) =77097021916a(18) =374301652563
External references
- oeis: A150838