Number of (w,x,y,z) with all terms in {1,...,n} and median<mean.

Terms

a(0) =0a(1) =0a(2) =4a(3) =24a(4) =84a(5) =220a(6) =480a(7) =924a(8) =1624a(9) =2664a(10) =4140a(11) =6160a(12) =8844a(13) =12324a(14) =16744a(15) =22260a(16) =29040a(17) =37264a(18) =47124a(19) =58824a(20) =72580a(21) =88620a(22) =107184a(23) =128524a(24) =152904a(25) =180600a(26) =211900a(27) =247104a(28) =286524a(29) =330484