Row 4 of table A162424.

Terms

a(0) =1a(1) =4a(2) =10a(3) =33a(4) =68a(5) =123a(6) =226a(7) =342a(8) =547a(9) =778a(10) =1071a(11) =1412a(12) =1901a(13) =2392a(14) =2997a(15) =3762a(16) =4391a(17) =5534a(18) =6645a(19) =7632a(20) =9045a(21) =10546a(22) =11983a(23) =13870a(24) =16011a(25) =17672a(26) =20107a(27) =22986a(28) =25297a(29) =28100