Riordan array (2c(-x)-1, xc(-x)^3), c(x) the g.f. of A000108.

Terms

a(0) =1a(1) =-2a(2) =1a(3) =4a(4) =-5a(5) =1a(6) =-10a(7) =19a(8) =-8a(9) =1a(10) =28a(11) =-68a(12) =43a(13) =-11a(14) =1a(15) =-84a(16) =240a(17) =-198a(18) =76a(19) =-14a(20) =1a(21) =264a(22) =-847a(23) =845a(24) =-427a(25) =118a(26) =-17a(27) =1a(28) =-858a(29) =3003