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, 1), (0, 0, -1), (0, 1, 1), (1, -1, 0)}.
A148799
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, 1), (0, 0, -1), (0, 1, 1), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =8a(4) =25a(5) =86a(6) =294a(7) =1024a(8) =3817a(9) =14242a(10) =54008a(11) =208696a(12) =811078a(13) =3195510a(14) =12739105a(15) =50994738a(16) =205890076a(17) =836663641a(18) =3415423985a(19) =14032729088a(20) =57915331555a(21) =239929351225a(22) =998341477817
External references
- oeis: A148799