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, 1), (-1, 1, 1), (1, -1, 0), (1, 0, 0), (1, 1, -1)}.
A148916
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, 1), (-1, 1, 1), (1, -1, 0), (1, 0, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =8a(4) =33a(5) =116a(6) =516a(7) =2063a(8) =9554a(9) =40942a(10) =194045a(11) =867281a(12) =4170657a(13) =19162172a(14) =93044027a(15) =435704224a(16) =2129890888a(17) =10110771458a(18) =49665401778a(19) =238154054194
External references
- oeis: A148916