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, 0, 1), (0, 0, 1), (1, -1, 1), (1, 0, -1), (1, 1, 0)}.
A150653
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, 0, 1), (0, 0, 1), (1, -1, 1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =28a(4) =119a(5) =525a(6) =2372a(7) =10913a(8) =50838a(9) =239117a(10) =1132997a(11) =5399870a(12) =25858176a(13) =124308107a(14) =599535016a(15) =2899495110a(16) =14055672883a(17) =68275267418a(18) =332234541047
External references
- oeis: A150653