Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0), ending on the vertical axis and consisting of 2 n steps taken from {(-1, -1), (-1, 0), (-1, 1), (1, 0), (1, 1)}.
A151424
Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0), ending on the vertical axis and consisting of 2 n steps taken from {(-1, -1), (-1, 0), (-1, 1), (1, 0), (1, 1)}.
Terms
- a(0) =1a(1) =5a(2) =58a(3) =864a(4) =14532a(5) =262644a(6) =4977800a(7) =97575176a(8) =1961361993a(9) =40200713991a(10) =836868065805
External references
- oeis: A151424