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 A243492 #19 Aug 16 2018 13:28:31 %S A243492 0,0,0,0,0,0,1,-1,0,0,0,2,-2,0,7,4,0,-7,-4,7,0,-7,0,0,0,4,-4,0,14,8,0, %T A243492 -14,-8,14,0,-14,0,29,19,25,16,14,10,5,-10,-29,-19,-5,-16,-25,-14,47, %U A243492 26,17,0,0,0,-17,-47,-26,37,12,-12,-37,0,0,0,8,-8,0,28,16,0,-28,-16,28,0,-28,0 %N A243492 Difference A243491(n) - A127301(n). %C A243492 A243490 gives the positions of zeros, which are also the fixed points of A069787. They correspond to the dots shown on the y=0 line of the arcsinh-version of scatter plot. %H A243492 Antti Karttunen, <a href="/A243492/b243492.txt">Table of n, a(n) for n = 0..6917</a> %H A243492 A. Karttunen, <a href="https://oeis.org/wiki/User:Antti_Karttunen/Speculations/On_the_fixed_points_of_A071661">On the fixed points of A071661</a> (Notes in OEIS Wiki) %F A243492 a(n) = A243491(n) - A127301(n) = A127301(A069787(n)) - A127301(n). %o A243492 (Scheme) (define (A243492 n) (- (A243491 n) (A127301 n))) %Y A243492 Cf. A069787, A243490, A057505, A079438, A123050, A080070, A153239, A153240, A153241, A154477. %K A243492 sign,look %O A243492 0,12 %A A243492 _Antti Karttunen_, Jun 07 2014