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), (0, 0, -1), (0, 0, 1), (0, 1, 1), (1, 1, 0)}.
A151172
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), (0, 0, -1), (0, 0, 1), (0, 1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =49a(4) =214a(5) =946a(6) =4304a(7) =19727a(8) =91830a(9) =429586a(10) =2028808a(11) =9615266a(12) =45859356a(13) =219301044a(14) =1053397024a(15) =5070299771a(16) =24485264294a(17) =118436821842a(18) =574327076360
External references
- oeis: A151172