Largest square <= sum of first n squares.

Terms

a(0) =1a(1) =4a(2) =9a(3) =25a(4) =49a(5) =81a(6) =121a(7) =196a(8) =256a(9) =361a(10) =484a(11) =625a(12) =784a(13) =961a(14) =1225a(15) =1444a(16) =1764a(17) =2025a(18) =2401a(19) =2809a(20) =3249a(21) =3721a(22) =4225a(23) =4900a(24) =5476a(25) =6084a(26) =6889a(27) =7569a(28) =8464a(29) =9409