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), (1, 0, -1), (1, 1, 0), (1, 1, 1)}.
A150943
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), (1, 0, -1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =34a(4) =159a(5) =686a(6) =3295a(7) =14981a(8) =72979a(9) =341250a(10) =1675508a(11) =7971231a(12) =39327083a(13) =189258001a(14) =936712081a(15) =4544151795a(16) =22541054385a(17) =109990199579a(18) =546487806524
External references
- oeis: A150943