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), (0, 1, -1), (0, 1, 1), (1, 0, -1), (1, 0, 1)}.
A150731
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), (0, 1, -1), (0, 1, 1), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =28a(4) =130a(5) =532a(6) =2528a(7) =11232a(8) =54018a(9) =248164a(10) =1212082a(11) =5682304a(12) =27893742a(13) =133023140a(14) =655148986a(15) =3154342858a(16) =15603065572a(17) =75639961162a(18) =374862248858
External references
- oeis: A150731