Number of lattice paths from (0,0) to (n,n) using steps (1,0), (1,1), (0,2), (2,2).
A191678
Number of lattice paths from (0,0) to (n,n) using steps (1,0), (1,1), (0,2), (2,2).
Terms
- a(0) =1a(1) =1a(2) =5a(3) =15a(4) =62a(5) =233a(6) =937a(7) =3729a(8) =15121a(9) =61492a(10) =251942a(11) =1036215a(12) =4279754a(13) =17731181a(14) =73670725a(15) =306823695a(16) =1280574706a(17) =5354602495a(18) =22426876445a(19) =94070238840a(20) =395106054632
External references
- oeis: A191678