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, 0, 1), (1, -1, 0), (1, 1, -1), (1, 1, 0)}.
A149300
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, 0, 1), (1, -1, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =46a(5) =167a(6) =724a(7) =2937a(8) =13198a(9) =56638a(10) =260681a(11) =1158673a(12) =5418236a(13) =24664374a(14) =116633536a(15) =540020796a(16) =2574876236a(17) =12072319038a(18) =57927952550a(19) =274200639772
External references
- oeis: A149300