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, 0), (-1, 1, 1), (0, 1, 1), (1, 0, 0), (1, 1, -1)}.
A150289
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, 0), (-1, 1, 1), (0, 1, 1), (1, 0, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =23a(4) =92a(5) =386a(6) =1665a(7) =7347a(8) =32998a(9) =150231a(10) =691195a(11) =3206754a(12) =14984744a(13) =70444527a(14) =332881927a(15) =1579979745a(16) =7527828960a(17) =35986754865a(18) =172545311966a(19) =829485969096
External references
- oeis: A150289