Maximal number of squares of side 1 in a disk of radius n.

Terms

a(0) =1a(1) =7a(2) =21a(3) =39a(4) =65a(5) =93a(6) =135a(7) =179a(8) =227a(9) =285a(10) =349a(11) =415a(12) =495a(13) =573a(14) =663a(15) =759a(16) =859a(17) =963a(18) =1071a(19) =1199a(20) =1325a(21) =1457a(22) =1591a(23) =1735a(24) =1891a(25) =2049a(26) =2207a(27) =2383a(28) =2557a(29) =2735