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 A092189 #9 Dec 02 2018 02:33:56 %S A092189 1,2,6,11,12,13,16,20,24,25,29,34,38,41,42,43,50,53,58,61,65,66,68,77, %T A092189 100,102,106,110,111,117,120,123,131,134,150,151,152,154,157,162,164, %U A092189 165,166,174,176,178,180,183,185,187,192,205,208,210,218,221,222,231 %N A092189 Numbers k such that the sum of the first k semiprimes is a semiprime. %H A092189 Zak Seidov, <a href="/A092189/b092189.txt">Table of n, a(n) for n = 1..50000</a> %e A092189 2 is a term because the sum of the first two semiprimes, 4 and 6, is 10, which is a semiprime. %Y A092189 Resulting semiprimes: A092190. %K A092189 easy,nonn %O A092189 1,2 %A A092189 _Zak Seidov_, Feb 23 2004