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 A174252 #9 Jun 01 2022 11:32:04 %S A174252 1,1,8,546,39731,2152050,99697633,4292655082,187497290034, %T A174252 8378760802160,385296986628990 %N A174252 Number of tilings of an 8 X n rectangle with n octominoes of any shape. %H A174252 R. S. Harris, <a href="http://www.bumblebeagle.org/polyominoes/tilingcounting/counting_9x9_tilings.pdf">Counting Nonomino Tilings and Other Things of that Ilk</a>, G4G9 Gift Exchange book, 2010. %H A174252 R. S. Harris, <a href="http://www.bumblebeagle.org/polyominoes/tilingcounting">Counting Polyomino Tilings</a> %Y A174252 Cf. A134438, A174248, A174249, A174250, A174251, A174253. %K A174252 nonn,more %O A174252 0,3 %A A174252 Bob Harris (me13013(AT)gmail.com), Mar 13 2010