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), (-1, 1, 1), (0, -1, 0), (1, 0, -1), (1, 0, 1)}.
A149382
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), (-1, 1, 1), (0, -1, 0), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =12a(4) =48a(5) =177a(6) =732a(7) =2996a(8) =12795a(9) =55028a(10) =241501a(11) =1069045a(12) =4787070a(13) =21597011a(14) =98225888a(15) =449295301a(16) =2067428541a(17) =9558297415a(18) =44388651274a(19) =206939813507a(20) =968202646112
External references
- oeis: A149382