El Gradechi's hybrid coefficients alpha^{4,4}_{2n}.

Terms

a(0) =480a(1) =4800a(2) =16800a(3) =40320a(4) =79200a(5) =137280a(6) =218400a(7) =326400a(8) =465120a(9) =638400a(10) =850080a(11) =1104000a(12) =1404000a(13) =1753920a(14) =2157600a(15) =2618880a(16) =3141600a(17) =3729600a(18) =4386720a(19) =5116800a(20) =5923680a(21) =6811200a(22) =7783200a(23) =8843520a(24) =9996000a(25) =11244480a(26) =12592800a(27) =14044800a(28) =15604320a(29) =17275200