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, 1), (0, 1, 0), (1, 0, -1), (1, 1, 1)}.
A150633
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, 1), (0, 1, 0), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =115a(5) =506a(6) =2275a(7) =10402a(8) =48109a(9) =224778a(10) =1058063a(11) =5012895a(12) =23871945a(13) =114179434a(14) =548116699a(15) =2639463453a(16) =12744643055a(17) =61681479028a(18) =299139139391
External references
- oeis: A150633