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), (0, 0, -1), (1, 0, 0), (1, 1, 0)}.
A150435
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), (0, 0, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =99a(5) =403a(6) =1754a(7) =7685a(8) =34615a(9) =157138a(10) =724092a(11) =3359140a(12) =15717016a(13) =73961981a(14) =349987423a(15) =1663258901a(16) =7936993440a(17) =37999635136a(18) =182481367565a(19) =878650252569
External references
- oeis: A150435