This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A067477 #8 Mar 13 2018 08:44:16 %S A067477 729,7056,70225,700569,7001316,70006689,700025764,7000166889, %T A067477 70000459776,700001628921,7000003645504,70000012293201, %U A067477 700000047060196,7000000057996009,70000000472817424,700000000779640729 %N A067477 Smallest n-digit square starting with 7. %F A067477 a(n) = ceiling(sqrt(7*10^(n-1)))^2, n>2. - _Rick L. Shepherd_, Feb 18 2002 %o A067477 (PARI) for(n=3,22,a=ceil(sqrt(7*10^(n-1)))^2; print(a)) %Y A067477 Cf. A035074 (roots), A067472-A067479 (2..9). %K A067477 base,easy,nonn %O A067477 3,1 %A A067477 _Amarnath Murthy_, Feb 09 2002 %E A067477 More terms from _Rick L. Shepherd_, Feb 18 2002