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, 1, 0), (1, 0, -1), (1, 1, 0)}.
A150469
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, 1, 0), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =98a(5) =403a(6) =1707a(7) =7426a(8) =32894a(9) =147944a(10) =673326a(11) =3094753a(12) =14342117a(13) =66924879a(14) =314151068a(15) =1482168472a(16) =7023972680a(17) =33415868060a(18) =159517768182a(19) =763809202239
External references
- oeis: A150469