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, 0, -1), (1, 0, 0), (1, 1, 1)}.
A150493
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, 0, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =101a(5) =400a(6) =1687a(7) =7130a(8) =30801a(9) =134130a(10) =591179a(11) =2618893a(12) =11699353a(13) =52508678a(14) =236771609a(15) =1072349619a(16) =4874373833a(17) =22221592336a(18) =101625788493a(19) =465924405515
External references
- oeis: A150493