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, 0, 0), (0, -1, 1), (0, 1, -1), (0, 1, 1), (1, 0, 1)}.
A150810
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, 0, 0), (0, -1, 1), (0, 1, -1), (0, 1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =31a(4) =134a(5) =584a(6) =2642a(7) =12055a(8) =55981a(9) =261467a(10) =1233884a(11) =5845271a(12) =27878434a(13) =133328052a(14) =640637869a(15) =3084629751a(16) =14902927109a(17) =72118713781a(18) =349894102528
External references
- oeis: A150810