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, 1, 1), (1, -1, 0), (1, 1, 0)}.
A150447
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, 1, 1), (1, -1, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =103a(5) =410a(6) =1847a(7) =7940a(8) =36766a(9) =163895a(10) =772073a(11) =3533351a(12) =16809456a(13) =78212465a(14) =375223703a(15) =1766948740a(16) =8522900287a(17) =40504133663a(18) =196267581473a(19) =939071884790
External references
- oeis: A150447