Number of return steps to the line y = x from the line y = x+1 (i.e., E steps from the line y = x+1 to the line y = x) in all Delannoy paths of length n.
A110099
Number of return steps to the line y = x from the line y = x+1 (i.e., E steps from the line y = x+1 to the line y = x) in all Delannoy paths of length n.
Terms
- a(0) =0a(1) =1a(2) =8a(3) =53a(4) =332a(5) =2029a(6) =12236a(7) =73193a(8) =435480a(9) =2581273a(10) =15258256a(11) =90005981a(12) =530071076a(13) =3117718213a(14) =18318316948a(15) =107537570513a(16) =630844709168
External references
- oeis: A110099