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 A100467 #9 Feb 16 2025 08:32:55 %S A100467 14,21,34,129,141,158,187,194,206,221,361,382,391,393,674,893,922,934, %T A100467 1067,1094,1133,1293,1415,1441,1473,1569,1589,1681,1703,1739,1769, %U A100467 1982,2119,2206,2362,2395,2433,2481,2507,2602,2614,2627,2642,2823,2839,2983 %N A100467 Semiprimes of special form: sum of a semiprime k and the k-th semiprime. %H A100467 Eric Weisstein, World of Mathematics, <a href="https://mathworld.wolfram.com/Semiprime.html">Semiprime.</a> %e A100467 34 is in the sequence because both 9 and 9+semiprime(9) = 9+25 = 34 are semiprimes. %Y A100467 Cf. A001358, A100493, A100466, A100915, A100916. %K A100467 easy,nonn %O A100467 1,1 %A A100467 _Jonathan Vos Post_, Nov 20 2004 %E A100467 Edited, corrected and extended by _Ray Chandler_, Nov 26 2004