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 A253098 #10 Dec 31 2020 11:11:15 %S A253098 1,6,15,36,61,98,155,240,329,430,551,700,869,1082,1363,1704,2049,2406, %T A253098 2783,3188,3613,4082,4619,5216,5833,6494,7223,8028,8917,9962,11203, %U A253098 12568,13937,15318,16719,18148,19597,21090,22651,24272,25913,27598,29351,31180,33093,35162,37427 %N A253098 Partial sums of A169707. %C A253098 Also, total number of cubic ON cells after n generations in a three-dimensional cellular automaton in which A169707(n) gives the number of cubic ON cells in the n-th level of the structure starting from the top. The structure looks like an irregular stepped pyramid. Note that there are two versions of this pyramid because there are two versions of the structure of the cellular automaton of A169707. - _Omar E. Pol_, Feb 17 2015 %H A253098 N. J. A. Sloane, <a href="http://arxiv.org/abs/1503.01168">On the Number of ON Cells in Cellular Automata</a>, arXiv:1503.01168, 2015 %H A253098 N. J. A. Sloane, <a href="/wiki/Catalog_of_Toothpick_and_CA_Sequences_in_OEIS">Catalog of Toothpick and Cellular Automata Sequences in the OEIS</a> %H A253098 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a> %Y A253098 Cf. A169707. %K A253098 nonn %O A253098 0,2 %A A253098 _N. J. A. Sloane_, Feb 16 2015