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 A376998 #33 Oct 27 2024 20:29:47 %S A376998 3,7,12,17,23 %N A376998 Minimum number of matchsticks required to make equilateral triangles of side lengths 1, 2, ..., n simultaneously. %C A376998 Upper bounds for a(6)-a(15) are 29, 35, 41, 48, 55, 62, 69, 77, 85, 93. %C A376998 The triangles are allowed to be oriented upside-down. All triangles should be within the largest triangle. %C A376998 This is the triangle equivalent of A294249. %H A376998 John King, <a href="/A376998/a376998_2.jpg">Triangles 1 to 15</a> %Y A376998 Cf. A294249. %K A376998 nonn,more %O A376998 1,1 %A A376998 _John King_, Oct 20 2024