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 A306725 #11 Apr 10 2019 06:13:38 %S A306725 1,0,0,1,2,9,46,507,11800 %N A306725 Number of connected strong irreducible digital images of n points up to strong homotopy equivalence. %C A306725 "Strong irreducible" means not strong homotopy equivalent to an image of fewer points. Each term is greater than or equal to the corresponding term of A248571. %H A306725 P. C. Staecker, <a href="https://arxiv.org/abs/1903.00706">Strong homotopy of digitally continuous functions</a>, arxiv:1903.00706 [math.GN], 2019. See table p. 16. %Y A306725 Cf. A248571. %K A306725 nonn,more %O A306725 1,5 %A A306725 _P. Christopher Staecker_, Mar 06 2019