Sum of the areas of all r X s rectangles such that r < s, r + s = 2n and (s - r) | (s * r).

Terms

a(0) =0a(1) =0a(2) =8a(3) =12a(4) =24a(5) =32a(6) =48a(7) =108a(8) =152a(9) =96a(10) =120a(11) =456a(12) =168a(13) =192a(14) =784a(15) =684a(16) =288a(17) =608a(18) =360a(19) =1416a(20) =1624a(21) =480a(22) =528a(23) =3188a(24) =1224a(25) =672a(26) =2096a(27) =2856a(28) =840a(29) =3136