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 A118776 #8 Oct 19 2021 21:33:00 %S A118776 1,2,2,4,2,4,2,4,6,2,6,4,6,6,6,8,4,12,6,12,6,2,4,14,4,6,2,10,8,10,12, %T A118776 2,10,6,2,12,16,6,6,12,6,6,6,12,12,14,4,6,20,10,6,6,20,10,12,8,10,12, %U A118776 12,6,12,6,12,8,4,8,4,6,12,20,16,6,6,2,6,10,12,18,14,10,6,6,6,18,6,18,18,24 %N A118776 Differences between consecutive Chen primes. %H A118776 Amiram Eldar, <a href="/A118776/b118776.txt">Table of n, a(n) for n = 1..10000</a> %t A118776 chenQ[n_] := PrimeQ[n] && PrimeOmega[n + 2] < 3; Differences@ Select[Range[750], chenQ] (* _Amiram Eldar_, Oct 19 2021 *) %Y A118776 Cf. A001223, A109611. %K A118776 nonn %O A118776 1,2 %A A118776 Luc Stevens (lms022(AT)yahoo.com), May 22 2006