Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0) and consisting of n steps taken from {(-1, -1), (-1, 0), (0, 1), (1, -1), (1, 0), (1, 1)}.
A151324
Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0) and consisting of n steps taken from {(-1, -1), (-1, 0), (0, 1), (1, -1), (1, 0), (1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =14a(3) =68a(4) =351a(5) =1863a(6) =10097a(7) =55554a(8) =309103a(9) =1735153a(10) =9809244a(11) =55775457a(12) =318669544a(13) =1828103920a(14) =10523723262a(15) =60763155726a(16) =351760568907
External references
- oeis: A151324