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, 0), (-1, 1, -1), (0, 1, 0), (1, 0, 1), (1, 1, 0)}.
A151113
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, 0), (-1, 1, -1), (0, 1, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =45a(4) =191a(5) =839a(6) =3763a(7) =17143a(8) =79001a(9) =367467a(10) =1721501a(11) =8113463a(12) =38427526a(13) =182765903a(14) =872362732a(15) =4176782763a(16) =20051987169a(17) =96495251804a(18) =465340310874
External references
- oeis: A151113