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), (0, 1, -1), (0, 1, 0), (1, -1, 1)}.
A150205
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), (0, 1, -1), (0, 1, 0), (1, -1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =21a(4) =80a(5) =324a(6) =1364a(7) =5907a(8) =26126a(9) =117468a(10) =535060a(11) =2462882a(12) =11434792a(13) =53472391a(14) =251569423a(15) =1189665940a(16) =5650911476a(17) =26945313271a(18) =128916708188a(19) =618616685416
External references
- oeis: A150205