Number of distinct cuboids with integer sides <= n and cubefree volume.

Terms

a(0) =1a(1) =3a(2) =8a(3) =11a(4) =23a(5) =33a(6) =57a(7) =57a(8) =70a(9) =95a(10) =142a(11) =156a(12) =220a(13) =271a(14) =338a(15) =338a(16) =441a(17) =480a(18) =609a(19) =658a(20) =775a(21) =896a(22) =1090a(23) =1090a(24) =1220a(25) =1387a(26) =1387a(27) =1468a(28) =1737a(29) =1882