Number of lattice paths from (0,0) to (n,n) using steps (1,0),(4,0),(0,1).
A383480
Number of lattice paths from (0,0) to (n,n) using steps (1,0),(4,0),(0,1).
Terms
- a(0) =1a(1) =2a(2) =6a(3) =20a(4) =75a(5) =294a(6) =1176a(7) =4752a(8) =19350a(9) =79310a(10) =326898a(11) =1353768a(12) =5628441a(13) =23478700a(14) =98217840a(15) =411879264a(16) =1730924700a(17) =7287941340a(18) =30736775190a(19) =129825892000a(20) =549096132585
External references
- oeis: A383480