8-Modular Catalan Numbers C_{n,8}.

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =42a(6) =132a(7) =429a(8) =1430a(9) =4861a(10) =16784a(11) =58695a(12) =207452a(13) =739840a(14) =2658936a(15) =9620232a(16) =35011566a(17) =128082523a(18) =470731970a(19) =1737220254a(20) =6435115168a(21) =23918062480a(22) =89172805980a(23) =333396591075