Fifth column (m=4) of triangle A060556.

Terms

a(0) =5a(1) =55a(2) =316a(3) =1284a(4) =4170a(5) =11550a(6) =28380a(7) =63492a(8) =131703a(9) =256685a(10) =474760a(11) =839800a(12) =1429428a(13) =2352732a(14) =3759720a(15) =5852760a(16) =8900265a(17) =13252899a(18) =19362596a(19) =27804700a(20) =39303550a(21) =54761850a(22) =75294180a(23) =102265020a(24) =137331675a(25) =182492505a(26) =240140880a(27) =313125296a(28) =404816104a(29) =519179320