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 A349807 #14 Dec 09 2021 02:11:38 %S A349807 1,4,21,42,190,152,802,590,2091,948,5461,3066,9361,6096,18225,7344, %T A349807 29356,19580,40720,31042,65459,30168,92926,66794,128386,93884,199869, %U A349807 70170,239755,167232,309937,229568,395256,248904,507160,374946,613003,482280,789948,426468,979154,730048,1129816 %N A349807 Number of cells in regular n-gon after 2 generations of mitosis. %C A349807 We would very much like to have a formula for a(n) similar to the Poonen-Rubinstein formula for column 1 of A350000 (cf. A007678). %Y A349807 Cf. A349967 (vertices), A349968 (edges), A007678. %Y A349807 This is the k=2 column of the array A350000. %K A349807 nonn %O A349807 3,2 %A A349807 _Scott R. Shannon_ and _N. J. A. Sloane_, Dec 06 2021