Generalized Catalan numbers C(-6; n).

A064328

Generalized Catalan numbers C(-6; n).

Terms

    a(0) =1a(1) =1a(2) =-5a(3) =61a(4) =-917a(5) =15421a(6) =-277733a(7) =5239117a(8) =-102188021a(9) =2044131037a(10) =-41706059525a(11) =864547613293

External references