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 A292150 #12 Jan 27 2020 02:02:22 %S A292150 0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,1,0,1,0,0,1,1,0,1,0,3,0,1,1,1, %T A292150 1,1,1,5,0,3,1,1,1,3,3,5,1,1,2,8,1,3,2,7,3,3,5,4,2,8,3,12,2,4,7,7,3,6, %U A292150 6,15,3,5,8,12,7,9,5,15,4,12,11,11,7,6 %N A292150 Number of distinct convex octagons that can be formed from n congruent isosceles right triangles. Reflections are not counted as distinct. %C A292150 Illustrated with other convex polyabolos in A245676. %H A292150 Douglas J. Durian, <a href="/A292150/b292150.txt">Table of n, a(n) for n = 1..750</a> %e A292150 The smallest convex octagonal polyabolos are for n = 14 and n = 20; both are symmetrical. %Y A292150 Strictly less than A245676. %K A292150 nonn %O A292150 1,30 %A A292150 _Douglas J. Durian_, Sep 13 2017 %E A292150 a(33) and beyond from _Douglas J. Durian_, Jan 25 2020