Number of lattice paths from (0,0) to (n,n) using steps S={(k,0),(0,k),(1,1)|0<k<=3} which never go above the line y-x.
A175896
Number of lattice paths from (0,0) to (n,n) using steps S={(k,0),(0,k),(1,1)|0<k<=3} which never go above the line y-x.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =57a(4) =396a(5) =2948a(6) =23016a(7) =185838a(8) =1539066a(9) =13001677a(10) =111600446a(11) =970550862a(12) =8533427593a(13) =75728797781a(14) =677427655798
External references
- oeis: A175896