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, 0), (0, 0, 1), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
A151239
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, 0), (0, 0, 1), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =14a(3) =64a(4) =307a(5) =1485a(6) =7269a(7) =35755a(8) =176665a(9) =875277a(10) =4345792a(11) =21609460a(12) =107578587a(13) =536028717a(14) =2672677318a(15) =13333233492a(16) =66543700069a(17) =332218051799
External references
- oeis: A151239