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 A257046 #5 Apr 15 2015 04:56:50 %S A257046 1,5,8,10,14,17,21,24,26,30,33,35,37,41,44,46,50,54,57,59,63,65,69,72, %T A257046 74,78,82,86,89,91,95,98,101,105,108,110,114,117,122,126,129,131,135, %U A257046 138,142,145,149,152,154,158,161,165,168,170,174,177,179,183,186 %N A257046 Numbers having trace 1 in their enhanced squares representation, see A256913. %C A257046 A256914(a(n)) = 1. %H A257046 Reinhard Zumkeller, <a href="/A257046/b257046.txt">Table of n, a(n) for n = 1..10000</a> %o A257046 (Haskell) %o A257046 a257046 n = a257046_list !! (n-1) %o A257046 a257046_list = filter ((== 1) . a256914) [0..] %Y A257046 Cf. A256913, A256914, A257047 (complement). %K A257046 nonn %O A257046 1,2 %A A257046 _Reinhard Zumkeller_, Apr 15 2015