Numbers whose square starts and ends with exactly 4 identical digits.

Terms

a(0) =235700a(1) =258200a(2) =333400a(3) =471400a(4) =577400a(5) =666700a(6) =816500a(7) =881900a(8) =942800a(9) =1054200a(10) =1054300a(11) =1054400a(12) =1054500a(13) =1490700a(14) =1490800a(15) =1490900a(16) =1825700a(17) =1825800a(18) =1825900a(19) =2108100a(20) =2108200a(21) =2108300a(22) =2357100a(23) =2581900a(24) =2788800a(25) =2788900a(26) =2981300a(27) =2981400a(28) =3162200a(29) =3333200