Riordan array (1,c(-x)), where c(x) = g.f. of Catalan numbers.

Terms

a(0) =1a(1) =0a(2) =1a(3) =0a(4) =-1a(5) =1a(6) =0a(7) =2a(8) =-2a(9) =1a(10) =0a(11) =-5a(12) =5a(13) =-3a(14) =1a(15) =0a(16) =14a(17) =-14a(18) =9a(19) =-4a(20) =1a(21) =0a(22) =-42a(23) =42a(24) =-28a(25) =14a(26) =-5a(27) =1a(28) =0a(29) =132