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, 0, 1), (1, -1, 0), (1, 1, 0)}.
A150141
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, 0, 1), (1, -1, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =20a(4) =73a(5) =281a(6) =1132a(7) =4668a(8) =19721a(9) =84781a(10) =368971a(11) =1627669a(12) =7241241a(13) =32500219a(14) =146956243a(15) =668357723a(16) =3058153676a(17) =14058081823a(18) =64914531045a(19) =300967681710
External references
- oeis: A150141