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), (-1, 0, 1), (0, 1, -1), (1, -1, 1), (1, 1, 0)}.
A149468
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), (-1, 0, 1), (0, 1, -1), (1, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =13a(4) =54a(5) =212a(6) =916a(7) =3984a(8) =17758a(9) =80159a(10) =367710a(11) =1700619a(12) =7930388a(13) =37241889a(14) =175959334a(15) =835236876a(16) =3981398689a(17) =19051204957a(18) =91454768190a(19) =440232013360
External references
- oeis: A149468