Number of 3-colored Schroeder paths of semilength n in which there are no (2,0)-steps at level 1.
A257072
Number of 3-colored Schroeder paths of semilength n in which there are no (2,0)-steps at level 1.
Terms
- a(0) =1a(1) =4a(2) =17a(3) =77a(4) =374a(5) =1959a(6) =11085a(7) =67500a(8) =438485a(9) =3004985a(10) =21485222a(11) =158744467a(12) =1202966761a(13) =9297312916a(14) =72981656937a(15) =580105886517
External references
- oeis: A257072