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 A165731 #9 Jan 16 2023 11:17:51 %S A165731 5,15,56,132,517,1202,3888,11911 %N A165731 Number of distinct rate points of concentric permutation source codes with four initial codewords in dimension n. %H A165731 H. Q. Nguyen, L. R. Varshney and V. K. Goyal, <a href="http://arxiv.org/abs/0909.0704">Concentric Permutation Source Codes</a>, arXiv:0909.0704 [cs.IT], 2009-2010. %Y A165731 Cf. A070289 (number of distinct rate points of an ordinary permutation source code), A165729, A165730. %K A165731 nonn,more %O A165731 2,1 %A A165731 Vivek Goyal (vgoyal(AT)mit.edu), Sep 25 2009