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 A152576 #6 May 23 2024 04:25:07 %S A152576 1,1,2,5,21,114,617 %N A152576 Number of equivalence classes of patterns of length n. %C A152576 This sequence is copied from the referenced paper and has not been independently confirmed by the submitter. %H A152576 V. Jelinek and T. Mansour, <a href="https://doi.org/10.37236/763">On pattern-avoiding partitions</a>, Elect. J. Comb. 15(2008) R39, p. 50 of 52. %K A152576 nonn,more %O A152576 1,3 %A A152576 _John W. Layman_, Dec 08 2008