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, 0), (-1, 0, 1), (1, -1, 0), (1, 1, -1), (1, 1, 0)}.
A149377
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, 0), (-1, 0, 1), (1, -1, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =12a(4) =48a(5) =168a(6) =734a(7) =2901a(8) =12956a(9) =53952a(10) =247794a(11) =1076150a(12) =5002284a(13) =22265521a(14) =104854868a(15) =476333956a(16) =2259433082a(17) =10406933888a(18) =49727145013a(19) =231743193049
External references
- oeis: A149377