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 A068834 #5 Dec 05 2013 19:55:13 %S A068834 81,100,121,144,400,10000,10201,10404,12100,40000,1000000,1002001, %T A068834 1004004,1020100,1172889,1210000,1232100,2604996,4000000,4297329, %U A068834 4485924,6185169,11048976,11108889,12916836,14584761,16353936,23040000 %N A068834 Square such that the next three squares also having a square digit sum. %e A068834 a(7) = 81 as the sum of the digits of 7 consecutive squares 81,100,121,144,169,196 and 225 is a square. %Y A068834 Cf. A068833. %K A068834 base,hard,nonn %O A068834 1,1 %A A068834 _Amarnath Murthy_, Mar 09 2002 %E A068834 More terms from _Sascha Kurz_, Mar 26 2002