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, 1, -1), (0, 1, 1), (1, -1, 0), (1, 0, 0)}.
A150022
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, 1, -1), (0, 1, 1), (1, -1, 0), (1, 0, 0)}.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =18a(4) =67a(5) =258a(6) =1054a(7) =4336a(8) =18390a(9) =79546a(10) =346789a(11) =1536833a(12) =6851192a(13) =30817749a(14) =139841923a(15) =637266870a(16) =2924137611a(17) =13471986079a(18) =62332135243a(19) =289725945703
External references
- oeis: A150022