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), (0, 1, 1), (1, -1, 1), (1, 1, 0)}.
A150530
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), (0, 1, 1), (1, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =107a(5) =436a(6) =1988a(7) =8626a(8) =40383a(9) =181774a(10) =863053a(11) =3976233a(12) =19049695a(13) =89148987a(14) =429832065a(15) =2033938473a(16) =9853400726a(17) =47009046208a(18) =228573689009
External references
- oeis: A150530