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 A077143 #11 May 07 2025 22:42:10
%S A077143 1,1,32,2448,477595,172497380,95614528147,83140881147429,
%T A077143 108654322319421237,182417905018755002030,368053025250427620488738,
%U A077143 1203788517781390541953924706,3772396790098755787608470015082
%N A077143 a(n) = floor(product of next n primes / sum of next n primes).
%H A077143 Harvey P. Dale, <a href="/A077143/b077143.txt">Table of n, a(n) for n = 1..190</a>
%p A077143 seq(floor(evalf(product(ithprime(i),i=n*(n-1)/2+1..n*(n+1)/2)/sum(ithprime(i),i=n*(n-1)/2+1..n*(n+1)/2),1000)),n=1..20);
%t A077143 With[{nn=15},Floor[(Times@@#)/Total[#]]&/@TakeList[Prime[Range[(nn(nn+1))/ 2]],Range[nn]]] (* Requires Mathematica version 11 or later *) (* _Harvey P. Dale_, Jul 02 2018 *)
%Y A077143 Cf. A077144, A077145.
%K A077143 nonn
%O A077143 1,3
%A A077143 _Amarnath Murthy_, Oct 30 2002
%E A077143 More terms from _Sascha Kurz_, Jan 17 2003