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, 0), (-1, 0, 0), (-1, 1, 0), (0, 1, 1), (1, -1, -1)}.
A148310
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, 0), (-1, 0, 0), (-1, 1, 0), (0, 1, 1), (1, -1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =37a(6) =116a(7) =360a(8) =1153a(9) =3817a(10) =12954a(11) =44046a(12) =154992a(13) =545891a(14) =1945476a(15) =7064170a(16) =25693848a(17) =94083579a(18) =350376440a(19) =1301899782a(20) =4869681054a(21) =18458415299a(22) =69773046856a(23) =265110681738
External references
- oeis: A148310