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, 1, 1), (0, -1, -1), (1, 0, 0)}.
A148224
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, 1, 1), (0, -1, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =13a(5) =31a(6) =99a(7) =291a(8) =933a(9) =2931a(10) =9966a(11) =32366a(12) =111293a(13) =383791a(14) =1324926a(15) =4651886a(16) =16629189a(17) =58774965a(18) =212001926a(19) =771615586a(20) =2789365275a(21) =10229224265a(22) =37832524835a(23) =138930785237a(24) =516591386223
External references
- oeis: A148224