Number of lattice paths from (0,0) to (n,n) using steps S={(k,0),(0,k),(r,r)|0<k<=4,0<r<=2} which never go above the line y=x.
A175937
Number of lattice paths from (0,0) to (n,n) using steps S={(k,0),(0,k),(r,r)|0<k<=4,0<r<=2} which never go above the line y=x.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =62a(4) =448a(5) =3464a(6) =28111a(7) =236022a(8) =2033145a(9) =17867442a(10) =159558635a(11) =1443747386a(12) =13207922431a(13) =121962046864
External references
- oeis: A175937