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, 1, -1), (1, -1, 1), (1, 0, 0), (1, 1, 1)}.
A150532
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, 1, -1), (1, -1, 1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =107a(5) =446a(6) =2025a(7) =8918a(8) =41505a(9) =188590a(10) =891481a(11) =4132317a(12) =19736049a(13) =92739682a(14) =446130229a(15) =2117054831a(16) =10238057437a(17) =48942490538a(18) =237635998597
External references
- oeis: A150532