Number of lattice paths from (0,0) to (n,n) using steps S={(k,0),(0,k),(1,1)|0<k<=4} which never go above the line y=x.
A175900
Number of lattice paths from (0,0) to (n,n) using steps S={(k,0),(0,k),(1,1)|0<k<=4} which never go above the line y=x.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =57a(4) =411a(5) =3150a(6) =25274a(7) =209719a(8) =1784909a(9) =15495058a(10) =136672624a(11) =1221370092a(12) =11034687854a(13) =100623850938a(14) =924917387599
External references
- oeis: A175900