Staircase of coefficients of polynomials used for column g.f.s of triangle A060924.

Terms

a(0) =3a(1) =-2a(2) =6a(3) =2a(4) =-4a(5) =9a(6) =39a(7) =-57a(8) =30a(9) =-8a(10) =12a(11) =136a(12) =-96a(13) =-84a(14) =104a(15) =-32a(16) =15a(17) =320a(18) =293a(19) =-1260a(20) =1155a(21) =-530a(22) =160a(23) =-32a(24) =18a(25) =618a(26) =2118a(27) =-4242a(28) =890a(29) =2718