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), (0, 1, 1), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
A151018
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), (0, 1, 1), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =39a(4) =189a(5) =896a(6) =4417a(7) =21576a(8) =107073a(9) =529240a(10) =2634775a(11) =13093073a(12) =65293025a(13) =325328452a(14) =1623926483a(15) =8102847121a(16) =40470054325a(17) =202092673302
External references
- oeis: A151018