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, 0, 1), (1, -1, 1), (1, 0, 1), (1, 1, 0)}.
A150523
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, 0, 1), (1, -1, 1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =104a(5) =412a(6) =1778a(7) =7478a(8) =32982a(9) =142825a(10) =639842a(11) =2825774a(12) =12772624a(13) =57176195a(14) =260372410a(15) =1176668867a(16) =5388408940a(17) =24533970811a(18) =112843715297a(19) =516762635772
External references
- oeis: A150523