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 A057306 #11 Apr 10 2018 08:26:36 %S A057306 1,4,12,27,47,69,99,142,184,227,281,344,414,477,548,641,719,810,925, %T A057306 1028,1128,1239,1371,1491,1626,1774,1904,2069,2221,2363,2534,2721, %U A057306 2911,3076,3257,3459,3660,3862,4083,4317,4531,4731,4974,5238,5452,5721 %N A057306 Coordination sequence T3 for Zeolite Code MTF. %H A057306 R. W. Grosse-Kunstleve, <a href="/A057306/b057306.txt">Table of n, a(n) for n = 0..1000</a> %H A057306 R. W. Grosse-Kunstleve, <a href="/A005897/a005897.html">Coordination Sequences and Encyclopedia of Integer Sequences</a> %H A057306 Sean A. Irvine, <a href="/A008000/a008000_1.pdf">Generating Functions for Coordination Sequences of Zeolites, after Grosse-Kunstleve, Brunner, and Sloane</a> %H A057306 International Zeolite Association, <a href="http://www.iza-structure.org/databases/">Database of Zeolite Structures</a> %K A057306 nonn %O A057306 0,2 %A A057306 _Ralf W. Grosse-Kunstleve_