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 A055319 #21 Aug 01 2025 07:07:50
%S A055319 8,4536,695520,61538400,4041576000,221759778240,10852244282880,
%T A055319 492871809830400,21317707547136000,893639962575360000,
%U A055319 36758908512752025600,1496966633049426739200,60752381255663505408000,2469167757848774062080000,100876656745052194406400000
%N A055319 Number of labeled trees with n nodes and 7 leaves.
%H A055319 Vincenzo Librandi, <a href="/A055319/b055319.txt">Table of n, a(n) for n = 8..200</a>
%H A055319 <a href="/index/Tra#trees">Index entries for sequences related to trees</a>
%F A055319 a(n) = (n!/7!)*Stirling2(n-2, n-7). - _Vladeta Jovovic_, Jan 28 2004
%F A055319 a(n) = n! * (n-7)^2*(n-6)^2*(n-5)*(n-4)*(n-3)*(n-2)*(3*n^2 - 35*n + 96)/58060800. - _Vaclav Kotesovec_, Jul 25 2014
%t A055319 Table[n! * (n-7)^2*(n-6)^2*(n-5)*(n-4)*(n-3)*(n-2)*(3*n^2 - 35*n + 96)/58060800,{n,8,20}] (* _Vaclav Kotesovec_, Jul 25 2014 *)
%o A055319 (Magma) [Factorial(n)*(n-7)^2*(n-6)^2*(n-5)*(n-4)*(n-3)*(n-2)*(3*n^2 - 35*n + 96)/58060800: n in [8..25]]; // _Vincenzo Librandi_, Jul 25 2014
%Y A055319 Column 7 of A055314.
%K A055319 nonn
%O A055319 8,1
%A A055319 _Christian G. Bower_, May 11 2000