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 A359998 #9 Jan 24 2023 17:42:51 %S A359998 1,1,1,1,2,2,28,216,65200,167084480 %N A359998 Number of longest directed cycles in the 2-Fibonacci digraph of order n. %C A359998 See Dalfó and Fiol (2019) or A360000 for the definition of the 2-Fibonacci digraph. %C A359998 The longest cycles appear to have length A080023(n). %H A359998 C. Dalfó and M. A. Fiol, <a href="https://arxiv.org/abs/1909.06766">On d-Fibonacci digraphs</a>, arXiv:1909.06766 [math.CO], 2019. %Y A359998 Cf. A016031, A080023, A359997, A360000. %K A359998 nonn,more %O A359998 1,5 %A A359998 _Pontus von Brömssen_, Jan 21 2023 %E A359998 a(10) from _Bert Dobbelaere_, Jan 24 2023