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 A052451 #24 Feb 16 2025 08:32:42 %S A052451 0,0,1,3,15,82,578,6021,101267,2882460,138787233,11117715525, %T A052451 1459391330953 %N A052451 Number of n-node simple graphs having clique number 3. %C A052451 Also, number of n-node simple graphs having independence number 3. - _Andrew Howroyd_, Oct 31 2017 %H A052451 Keith M. Briggs, <a href="http://keithbriggs.info/cgt.html">Combinatorial Graph Theory</a> %H A052451 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/CliqueNumber.html">Clique Number.</a> %Y A052451 Column 3 of A263341. %Y A052451 Cf. A052450, A052452, A052453, A077392, A077393, A077394. %K A052451 nonn,more %O A052451 1,4 %A A052451 _Eric W. Weisstein_ %E A052451 2 more terms from _Eric W. Weisstein_, Nov 03 2002 %E A052451 a(10) from _Keith Briggs_, Mar 15 2006 %E A052451 a(11) from _Michael Sollami_, Jan 29 2012 %E A052451 a(12) from _Michael Sollami_, Mar 26 2012 %E A052451 a(13) from _Brendan McKay_, May 07 2018