Squares with initial digit '7'.

Terms

a(0) =729a(1) =784a(2) =7056a(3) =7225a(4) =7396a(5) =7569a(6) =7744a(7) =7921a(8) =70225a(9) =70756a(10) =71289a(11) =71824a(12) =72361a(13) =72900a(14) =73441a(15) =73984a(16) =74529a(17) =75076a(18) =75625a(19) =76176a(20) =76729a(21) =77284a(22) =77841a(23) =78400a(24) =78961a(25) =79524a(26) =700569a(27) =702244a(28) =703921a(29) =705600