Generalized Catalan numbers C(2,5;n)=C(5,2;n).

A116875

Generalized Catalan numbers C(2,5;n)=C(5,2;n).

Terms

    a(0) =1a(1) =1a(2) =7a(3) =109a(4) =2383a(5) =61621a(6) =1755127a(7) =53192749a(8) =1683052063a(9) =54960231781

External references