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, 1, 0), (1, 0, 0), (1, 1, 0), (1, 1, 1)}.
A151236
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, 1, 0), (1, 0, 0), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =14a(3) =59a(4) =288a(5) =1311a(6) =6489a(7) =30535a(8) =151900a(9) =727661a(10) =3627957a(11) =17569091a(12) =87696862a(13) =427745087a(14) =2136486736a(15) =10473195599a(16) =52331021438a(17) =257470685339
External references
- oeis: A151236