E.g.f.: x^3*log(1/(1-x)).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =24a(5) =60a(6) =240a(7) =1260a(8) =8064a(9) =60480a(10) =518400a(11) =4989600a(12) =53222400a(13) =622702080a(14) =7925299200a(15) =108972864000