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), (1, 0, 1), (1, 1, 0)}.
A150740
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), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =124a(5) =522a(6) =2318a(7) =10326a(8) =47093a(9) =215889a(10) =1002539a(11) =4676951a(12) =21993457a(13) =103809737a(14) =492664617a(15) =2344988378a(16) =11206181477a(17) =53677539149a(18) =257893535125
External references
- oeis: A150740