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), (0, 1, 1), (1, 0, 0), (1, 1, -1)}.
A150285
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), (0, 1, 1), (1, 0, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =23a(4) =91a(5) =388a(6) =1694a(7) =7580a(8) =34503a(9) =158934a(10) =740085a(11) =3472317a(12) =16403905a(13) =77905795a(14) =371712658a(15) =1780389419a(16) =8555917907a(17) =41234933337a(18) =199226988229a(19) =964687115736
External references
- oeis: A150285