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, 0), (0, 1, 1), (1, -1, -1), (1, 1, 0)}.
A150416
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, 0), (0, 1, 1), (1, -1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =95a(5) =377a(6) =1581a(7) =6696a(8) =29087a(9) =127728a(10) =568503a(11) =2553092a(12) =11566182a(13) =52752590a(14) =242145127a(15) =1117213908a(16) =5179861590a(17) =24114512752a(18) =112690488340a(19) =528395576031
External references
- oeis: A150416