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, 0), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.
A149052
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, 0), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =10a(4) =40a(5) =152a(6) =663a(7) =2764a(8) =12535a(9) =54868a(10) =254618a(11) =1149816a(12) =5416066a(13) =24963487a(14) =118813118a(15) =555574475a(16) =2664192114a(17) =12590183411a(18) =60716475411a(19) =289237761617
External references
- oeis: A149052