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 A254435 #26 Jun 02 2025 11:32:05 %S A254435 1,9,81,729,1296,23532201 %N A254435 Squares in A254296. %C A254435 They seem to be in the ((3^(n-1) + 1)/2)-th to ((3^(n-1)-1)/2 + 3^(n-2))-th values of A254296, though this is not proved. The terms are the squares of: 1, 3, 9, 27, 36, 4851. %H A254435 Md Towhidul Islam & Md Shahidul Islam, <a href="http://arxiv.org/abs/1502.07730">Number of Partitions of an n-kilogram Stone into Minimum Number of Weights to Weigh All Integral Weights from 1 to n kg(s) on a Two-pan Balance</a>, arXiv:1502.07730 [math.CO], 2015. %Y A254435 Cf. A254296, A254430, A254431, A254432, A254433, A254436, A254437, A254438, A254439, A254440, A254442. %K A254435 nonn,more %O A254435 1,2 %A A254435 _Md. Towhidul Islam_, Feb 03 2015