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 A002087 M0578 N0211 #28 Oct 14 2023 21:11:41 %S A002087 1,1,2,3,4,6,16,16,30 %N A002087 Number of point-symmetric tournaments with 2n+1 nodes. %D A002087 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %D A002087 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A002087 B. Alspach, <a href="http://dx.doi.org/10.4153/CMB-1970-061-7">On point-symmetric tournaments</a>, Canad. Math. Bull., 13 (1970), 317-323. See t(n). %H A002087 B. Alspach, <a href="/A002086/a002086.pdf">On point-symmetric tournaments</a>, Canad. Math. Bull., 13 (1970), 317-323. [Annotated copy] See t(n). %H A002087 <a href="/index/To#tournament">Index entries for sequences related to tournaments</a> %Y A002087 Cf. A002086, A049288 (note that A002086, A002087, A049288 are distinct sequences). %K A002087 nonn,more %O A002087 1,3 %A A002087 _N. J. A. Sloane_ %E A002087 Reference to Alspach (1970) corrected by _Andrew Howroyd_, Apr 28 2017