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, -1), (-1, 0, 1), (0, 1, 0), (1, 0, -1), (1, 0, 1)}.
A150236
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, -1), (-1, 0, 1), (0, 1, 0), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =22a(4) =82a(5) =334a(6) =1380a(7) =5872a(8) =25544a(9) =112138a(10) =500750a(11) =2252154a(12) =10222930a(13) =46762182a(14) =215003456a(15) =994846044a(16) =4622431714a(17) =21571568870a(18) =101058672192a(19) =474916738396
External references
- oeis: A150236