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 A274597 #26 Aug 12 2019 02:46:52 %S A274597 1,4,10,28,68,158,350,750,1559,3170,6292,12252,23445,44164,81995, %T A274597 150288,272150,487388,863887,1516592,2638648,4552488,7792566,13239698, %U A274597 22336630,37433466,62337628,103186612,169824540,277967860,452594316,733229626,1182159039,1897140990,3031012912 %N A274597 Number of ways to remove n oranges from an infinite stack of oranges whose m-th layer is an m X (m+3) rectangle. %C A274597 This problem was stated in this fashion by R. Kenyon and Ben Young in the Domino Forum (domino@listserv.uml.edu). %H A274597 Suresh Govindarajan, <a href="/A274597/b274597.txt">Table of n, a(n) for n = 0..45</a> %H A274597 Domino Forum, <a href="https://listserv.uml.edu/cgi-bin/wa.exe?A0=DOMINO">Domino Home Page</a> %H A274597 S. Govindarajan, A. J. Guttmann and V. Subramanyan, <a href="https://arxiv.org/abs/1607.01890">On a square-ice analogue of plane partitions</a>, arXiv:1607.01890 [cond-mat.stat-mech], 2016. %Y A274597 Cf. A274582, A274594, A274596, A274598, A274599. %K A274597 nonn,hard %O A274597 0,2 %A A274597 _Suresh Govindarajan_, Jun 30 2016