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 A279542 #8 Nov 27 2017 00:24:27
%S A279542 1,2,3,4,6,8,9,12,16,18,20,24,27,32,36,40,48,54,64,72,80,96,108,120,
%T A279542 128,144,160,192,216,240,256,288,320,360,384,432,480,512,576,640,720,
%U A279542 768,864,960,1024,1152,1280,1440,1536,1728,1920,2048,2304,2400,2560,2880,3072,3456,3840,4096
%N A279542 Records in A192013: Sum_{d|n} Kronecker(-6, d).
%H A279542 Charles R Greathouse IV, <a href="/A279542/b279542.txt">Table of n, a(n) for n = 1..400</a>
%F A279542 a(n) = A192013(A279541(n)) = A000005(A279541(n)).
%e A279542 Let (m|n) = Kronecker(m, n) be the Kronecker symbol.
%e A279542 A192013(1) = (-6|1) = 1 = a(1).
%e A279542 A192013(5) = (-6|1) + (-6|5) = 2 = a(2).
%e A279542 A192013(25) = (-6|1) + (-6|5) + (-6|25) = 3 = a(3).
%e A279542 A192013(35) = (-6|1) + (-6|5) + (-6|7) + (-35|1) = 4 = a(4).
%e A279542 A192013(175) = (-6|1) + (-6|5) + (-6|7) + (-6|25) + (-6|35) + (-6|175) = 6 = a(5).
%e A279542 A192013(385) = (-6|1) + (-6|5) + (-6|7) + (-6|11) + (-6|35) + (-6|55) + (-6|77) + (-6|385) = 8 = a(6).
%Y A279542 Cf. A192013, A279541, A109017, A000005.
%K A279542 nonn
%O A279542 1,2
%A A279542 _Charles R Greathouse IV_, Dec 14 2016