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 A002723 M0272 N0095 #28 Oct 22 2023 16:31:34 %S A002723 1,1,1,1,2,2,3,3,5,6,8,9,11,14,19,22,28,34,44,52,63,78,99,119,144,178, %T A002723 219,265 %N A002723 Number of rotatable partitions of [n]. %D A002723 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %D A002723 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A002723 R. J. Mathar, <a href="/A002723/a002723.java.txt">Java source code</a>. %H A002723 E. M. Wright, <a href="http://dx.doi.org/10.1112/jlms/s1-43.1.501">Rotatable partitions</a>, J. London Math. Soc., 43 (1968), 501-505, q'(4,inf,n). %H A002723 E. M. Wright, <a href="/A002722/a002722.pdf">Rotatable partitions</a>, J. London Math. Soc., 43 (1968), 501-505. [Annotated scanned copy] %Y A002723 Cf. A002722. %K A002723 nonn,more %O A002723 1,5 %A A002723 _N. J. A. Sloane_ %E A002723 a(17)-a(28) from _R. J. Mathar_, May 29 2016