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, 0, -1), (0, 1, 1), (1, -1, -1), (1, -1, 0)}.
A148652
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, 0, -1), (0, 1, 1), (1, -1, -1), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =6a(4) =24a(5) =64a(6) =225a(7) =764a(8) =2722a(9) =9580a(10) =35173a(11) =131524a(12) =490288a(13) =1844811a(14) =7149587a(15) =27432934a(16) =106212841a(17) =417300569a(18) =1642230108a(19) =6477616246a(20) =25747354409a(21) =103049195615a(22) =412277389692
External references
- oeis: A148652