Number of (w,x,y,z) with all terms in {0,...,n} and odd range.

Terms

a(0) =0a(1) =14a(2) =28a(3) =152a(4) =276a(5) =702a(6) =1128a(7) =2144a(8) =3160a(9) =5150a(10) =7140a(11) =10584a(12) =14028a(13) =19502a(14) =24976a(15) =33152a(16) =41328a(17) =52974a(18) =64620a(19) =80600a(20) =96580a(21) =117854a(22) =139128a(23) =166752a(24) =194376a(25) =229502a(26) =264628a(27) =308504a(28) =352380a(29) =406350