Sum of squares of digits of n is equal to the largest prime factor of n.

Terms

a(0) =1a(1) =120a(2) =133a(3) =267a(4) =298a(5) =803a(6) =917a(7) =973a(8) =1200a(9) =1316a(10) =1330a(11) =1606a(12) =2023a(13) =2511a(14) =2575a(15) =2669a(16) =2670a(17) =2980a(18) =3312a(19) =6179a(20) =6328a(21) =8030a(22) =8083a(23) =8362a(24) =9170a(25) =9730a(26) =10686a(27) =11256a(28) =12000a(29) =12312