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, 0), (0, 0, -1), (0, 1, 1), (1, 0, 1)}.
A150484
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, 0), (0, 0, -1), (0, 1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =100a(5) =409a(6) =1706a(7) =7266a(8) =31440a(9) =137453a(10) =606406a(11) =2694978a(12) =12050761a(13) =54172483a(14) =244631445a(15) =1109052334a(16) =5045467997a(17) =23024221298a(18) =105354826753a(19) =483273587306
External references
- oeis: A150484