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, 1, 0), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.
A150407
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, 1, 0), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =93a(5) =376a(6) =1560a(7) =6606a(8) =28459a(9) =124092a(10) =546417a(11) =2424978a(12) =10834083a(13) =48674504a(14) =219721426a(15) =995917393a(16) =4530389392a(17) =20673892690a(18) =94608077696a(19) =434035171255
External references
- oeis: A150407