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 A268540 #23 Feb 29 2016 02:43:41 %S A268540 24,28,32,36,40,44,48,52,56,60,68,72,76,80,84,88,92,96,108,112,116, %T A268540 128,132,140,152,156,176,180,184,188,192,204,212,216,220,232,236,240, %U A268540 252,264,272,296,304,312,320,332,336,348,380,392,396,408,412,416,428,432,436,456,468,472,476,480,492,500,508,512,516 %N A268540 Numbers whose Fouriest transform (see A268236) is 44. %C A268540 If we are ever going to understand A268236 then we need to understand this sequence first. %C A268540 Based on _Nathan Fox_'s extended table in A268236. %C A268540 Equivalently, numbers 4k (k>5) whose representations in bases 5 through k-2 each contain at most one 4. %C A268540 Equivalently, numbers 4k (k>5) whose representations in integer bases less than sqrt(4k) each contain at most one 4. %C A268540 Is this sequence infinite? %H A268540 Nathan Fox, <a href="/A268540/b268540.txt">Table of n, a(n) for n = 1..507</a> %Y A268540 Cf. A268236, A268237, A268238, A268541. %K A268540 nonn,base %O A268540 1,1 %A A268540 _Jake Baron_, _Patrick Devlin_, _Nathan Fox_, and _N. J. A. Sloane_, Feb 27 2016