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), (0, 0, 1), (0, 1, -1), (0, 1, 1), (1, 0, 1)}.
A151169
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), (0, 0, 1), (0, 1, -1), (0, 1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =48a(4) =214a(5) =954a(6) =4397a(7) =20348a(8) =95767a(9) =451971a(10) =2152468a(11) =10279661a(12) =49360246a(13) =237549945a(14) =1147343321a(15) =5552040190a(16) =26933673098a(17) =130863443143a(18) =637005489308
External references
- oeis: A151169