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 A077729 #18 Jan 30 2022 09:52:07 %S A077729 1,225,3330625,44448889,55555432804,6666662032144,77777777127241, %T A077729 8888888859057216,99999999989350756, %U A077729 101010101010101010103146096508501770025,1111111111111111111111185920458269940592889,121212121212121212121212460158453802091945103889 %N A077729 Smallest square beginning with n copies of n. %C A077729 From a(1) up to a(12), except for n = 7, these smallest squares begin with exactly n copies of n, but a(7) begins with 8 copies of 7. What is the smallest square beginning with exactly 7 copies of 7? - _Bernard Schott_, Jan 29 2022 %C A077729 27888667^2 = 777777747036889 begins with exactly 7 copies of 7. - _Michel Marcus_, Jan 30 2022 %Y A077729 Cf. A077730. %K A077729 base,nonn %O A077729 1,2 %A A077729 _Amarnath Murthy_, Nov 19 2002 %E A077729 Corrected and extended by _Sascha Kurz_, Jan 04 2003 %E A077729 a(11)-a(12) from _Bernard Schott_, Jan 29 2022