Squares with initial digit '4'.

Terms

a(0) =4a(1) =49a(2) =400a(3) =441a(4) =484a(5) =4096a(6) =4225a(7) =4356a(8) =4489a(9) =4624a(10) =4761a(11) =4900a(12) =40000a(13) =40401a(14) =40804a(15) =41209a(16) =41616a(17) =42025a(18) =42436a(19) =42849a(20) =43264a(21) =43681a(22) =44100a(23) =44521a(24) =44944a(25) =45369a(26) =45796a(27) =46225a(28) =46656a(29) =47089