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 A369827 #9 Feb 02 2024 18:49:24 %S A369827 1,1,19,825,64673,8692845,2075942407,947096199049,871511924986417, %T A369827 1641139351778666025,6294238937330719034075, %U A369827 48874098188760259868846393,765415330468764867988682358017,24118078877292963934598044030624645,1526534496216469250983883702116378352415 %N A369827 Number of labeled graphs on 2n nodes with n connected components. %C A369827 All terms are odd. %H A369827 Alois P. Heinz, <a href="/A369827/b369827.txt">Table of n, a(n) for n = 0..79</a> %F A369827 a(n) = A143543(2n,n). %Y A369827 Cf. A143543. %K A369827 nonn %O A369827 0,3 %A A369827 _Alois P. Heinz_, Feb 02 2024