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 A160447 #31 Apr 03 2020 17:03:52 %S A160447 1,1,32,1393,336465,207388305,268749463729,645244638648481, %T A160447 2642912633259448386,17340131659334061379490, %U A160447 173401255467914281827442642,2538767439061885080225425717858,52643878634689290630033137748571475 %N A160447 Number of isomorphism classes of n-fold coverings of a connected graph with Betti number 5. %C A160447 Number of orbits of the conjugacy action of Sym(n) on Sym(n)^5 [Kwak and Lee, 2001]. - _Álvar Ibeas_, Mar 24 2015 %D A160447 J. H. Kwak and J. Lee, Enumeration of graph coverings, surface branched coverings and related group theory, in Combinatorial and Computational Mathematics (Pohang, 2000), ed. S. Hong et al., World Scientific, Singapore 2001, pp. 97-161. %H A160447 Álvar Ibeas, <a href="/A160447/b160447.txt">Table of n, a(n) for n = 0..60</a> [a(0)=1 prepended by _Georg Fischer_, Apr 03 2020] %H A160447 J. H. Kwak and J. Lee, <a href="https://doi.org/10.4153/CJM-1990-039-3">Isomorphism classes of graph bundles</a>. Can. J. Math., 42(4), 1990, pp. 747-761. %o A160447 (Sage) %o A160447 [sum(p.aut()**4 for p in Partitions(n)) for n in range(6)] # _Álvar Ibeas_, Mar 24 2015 %Y A160447 Sixth column of A160449. %K A160447 nonn %O A160447 0,3 %A A160447 _N. J. A. Sloane_, Nov 12 2009 %E A160447 Name clarified and more terms added by _Álvar Ibeas_, Mar 24 2015 %E A160447 a(0)=1 prepended by _F. Chapoton_, Mar 15 2020