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 A080150 #18 Feb 16 2025 08:32:48 %S A080150 1,16,81,256,625,1296,2401,4096,6561,6724,7225,8100,9409,11236,13689, %T A080150 16900,21025,26244,26569,27556,29241,31684,34969,39204,44521,51076, %U A080150 59049,59536,61009,63504,67081,71824,77841,85264,94249,104976,105625 %N A080150 Let m = Wonderful Demlo number A002477(n); a(n) = square of the sum of digits of m. %C A080150 These numbers are themselves squares, their square roots being in A080151. %H A080150 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/DemloNumber.html">Demlo Number</a> %F A080150 a(n) = (A080151(n))^2. %Y A080150 Cf. A080151, A002477. %K A080150 nonn,base,easy %O A080150 1,2 %A A080150 _Eric W. Weisstein_, Jan 31 2003 %E A080150 Name corrected by _Robert Israel_, Aug 06 2019