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), (1, 0, 0), (1, 0, 1), (1, 1, 1)}.
A151176
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), (1, 0, 0), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =49a(4) =224a(5) =1003a(6) =4768a(7) =22205a(8) =107427a(9) =510781a(10) =2496415a(11) =12023925a(12) =59130180a(13) =287233639a(14) =1418316408a(15) =6930885083a(16) =34321022015a(17) =168447987219a(18) =835840981998
External references
- oeis: A151176