Total area of all distinct rectangles whose length and width are relatively prime and L + W = n.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =10a(5) =5a(6) =28a(7) =22a(8) =42a(9) =30a(10) =110a(11) =46a(12) =182a(13) =91a(14) =140a(15) =172a(16) =408a(17) =159a(18) =570a(19) =260a(20) =420a(21) =385a(22) =1012a(23) =380a(24) =1050a(25) =650a(26) =1098a(27) =770a(28) =2030a(29) =620