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, -1), (1, 0, 0), (1, 1, 1)}.
A150821
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, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =31a(4) =142a(5) =610a(6) =2910a(7) =13214a(8) =64024a(9) =299038a(10) =1463073a(11) =6954791a(12) =34222168a(13) =164581676a(14) =812984647a(15) =3941658778a(16) =19522912255a(17) =95216834229a(18) =472523074541
External references
- oeis: A150821