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, 1), (0, 1, 0), (1, 0, 1), (1, 1, -1)}.
A150298
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, 1), (0, 1, 0), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =23a(4) =97a(5) =422a(6) =1894a(7) =8633a(8) =39881a(9) =186176a(10) =876243a(11) =4151145a(12) =19773413a(13) =94604441a(14) =454324159a(15) =2188713679a(16) =10572670774a(17) =51191032546a(18) =248363563505
External references
- oeis: A150298