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 A077145 #9 May 08 2025 12:32:06 %S A077145 0,0,0,3,17,106,590,3090,21092,127889,734604,6252468,32854824, %T A077145 279387963,1909105118,12319099520,95059552565,740652053314, %U A077145 4888570540807,40743793439712,307640708818550,2379664631112651,17269477509704034,165628134793721883 %N A077145 a(n) = floor(product of next n primes / product of next n composite numbers). %F A077145 a(n) = floor(A007467(n)/A071221(n)). - _Michel Marcus_, May 08 2025 %Y A077145 Cf. A007467, A071221. %Y A077145 Cf. A077143, A077144. %K A077145 nonn %O A077145 1,4 %A A077145 _Amarnath Murthy_, Oct 30 2002 %E A077145 a(7)-a(9) from Donald Sampson (marsquo(AT)hotmail.com), Dec 08 2003 %E A077145 More terms from _Sean A. Irvine_, May 07 2025