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, 0, 1), (0, -1, 1), (0, 1, 0), (1, 1, -1), (1, 1, 1)}.
A150886
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, 0, 1), (0, -1, 1), (0, 1, 0), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =33a(4) =150a(5) =697a(6) =3304a(7) =15856a(8) =76779a(9) =373987a(10) =1830987a(11) =8995672a(12) =44323228a(13) =218889525a(14) =1082922623a(15) =5365602826a(16) =26617684027a(17) =132178009958a(18) =656929238725
External references
- oeis: A150886