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 A278546 #7 Nov 23 2016 11:35:08
%S A278546 8,18,28,130,134,138,148,158,176,318,530,538,548,576,644,1300,2170,
%T A278546 2202,2212,2228,2230,2248,8706,8938,8948,34970,35082
%N A278546 Even numbers that cannot be expressed as a sum of 3 or fewer terms of A035928.
%C A278546 This is conjectured to be the complete list. There are no other examples smaller than 16773120.
%t A278546 nn = 10^5; Complement[Range[2, nn, 2], Union@ Map[Total, Rest@ Tuples[{0}~Join~#, 3]] &@ Select[Range@ nn, Function[k, Reverse[# /. {1 -> 0, 0 -> 1}] == # &@ IntegerDigits[k, 2]]]] (* _Michael De Vlieger_, Nov 23 2016, after _Harvey P. Dale_ at A035928 *)
%Y A278546 Cf. A035928, A278465.
%K A278546 nonn,more
%O A278546 1,1
%A A278546 _Jeffrey Shallit_, Nov 23 2016