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 A359688 #5 Jan 11 2023 13:13:53 %S A359688 0,0,0,0,4,10,36,94,294,794,2300,6394,18266,51592,147426,420512, %T A359688 1206740,3466876 %N A359688 a(n) is the number of asymmetrical polyiamonds of n cells. %Y A359688 Cf. A000577. %K A359688 nonn,more %O A359688 1,5 %A A359688 _John Mason_, Jan 11 2023