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, -1, 1), (-1, 1, 0), (1, 0, 0), (1, 1, 0)}.
A150303
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, -1, 1), (-1, 1, 0), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =21a(4) =82a(5) =282a(6) =1198a(7) =4466a(8) =19705a(9) =76858a(10) =347131a(11) =1397815a(12) =6429031a(13) =26498484a(14) =123329949a(15) =517100523a(16) =2429332648a(17) =10327174912a(18) =48879963250a(19) =210096616126
External references
- oeis: A150303