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, 0, 0), (1, -1, 1), (1, 0, 0), (1, 1, -1), (1, 1, 1)}.
A150863
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, 0, 0), (1, -1, 1), (1, 0, 0), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =32a(4) =144a(5) =654a(6) =3080a(7) =14562a(8) =69904a(9) =336652a(10) =1634408a(11) =7955794a(12) =38912004a(13) =190718078a(14) =937615768a(15) =4617046948a(16) =22782114168a(17) =112556710018a(18) =556894922832
External references
- oeis: A150863