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, 1), (-1, 0, 0), (1, -1, -1), (1, 0, 1), (1, 1, 0)}.
A150378
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, 1), (-1, 0, 0), (1, -1, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =96a(5) =370a(6) =1582a(7) =6521a(8) =28643a(9) =122638a(10) =546792a(11) =2394446a(12) =10792173a(13) =48021728a(14) =218179960a(15) =981883990a(16) =4488678934a(17) =20373041373a(18) =93593834773a(19) =427623466487
External references
- oeis: A150378