Riordan array (s(x),x*S(x)) where s(x) is the g.f. of the little Schroeder numbers A001003, and S(x) is the g.f. of the large Schroeder numbers A006318.
A186826
Riordan array (s(x),x*S(x)) where s(x) is the g.f. of the little Schroeder numbers A001003, and S(x) is the g.f. of the large Schroeder numbers A006318.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =3a(5) =1a(6) =11a(7) =11a(8) =5a(9) =1a(10) =45a(11) =45a(12) =23a(13) =7a(14) =1a(15) =197a(16) =197a(17) =107a(18) =39a(19) =9a(20) =1a(21) =903a(22) =903a(23) =509a(24) =205a(25) =59a(26) =11a(27) =1a(28) =4279a(29) =4279
External references
- oeis: A186826