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, 0, 1), (0, 1, 1), (1, 0, 0), (1, 1, -1)}.
A150283
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, 0, 1), (0, 1, 1), (1, 0, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =23a(4) =90a(5) =377a(6) =1618a(7) =7113a(8) =31902a(9) =144788a(10) =665084a(11) =3080587a(12) =14380033a(13) =67541190a(14) =318908975a(15) =1512720820a(16) =7203699746a(17) =34424709535a(18) =165006066559a(19) =793058434398
External references
- oeis: A150283