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, 0, 0), (0, -1, 1), (1, 1, -1), (1, 1, 0), (1, 1, 1)}.
A150998
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, 0, 0), (0, -1, 1), (1, 1, -1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =38a(4) =173a(5) =811a(6) =3849a(7) =18466a(8) =89607a(9) =436576a(10) =2136997a(11) =10505680a(12) =51760229a(13) =255580298a(14) =1264625226a(15) =6265229147a(16) =31076772966a(17) =154320198127a(18) =766900717629
External references
- oeis: A150998