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), (0, 0, 1), (1, -1, 1), (1, 1, 0)}.
A150211
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), (0, 0, 1), (1, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =21a(4) =81a(5) =326a(6) =1370a(7) =5901a(8) =25906a(9) =115508a(10) =521092a(11) =2373802a(12) =10901487a(13) =50404116a(14) =234397483a(15) =1095491168a(16) =5142163647a(17) =24229212446a(18) =114550696414a(19) =543203132012
External references
- oeis: A150211