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 A116025 #4 May 21 2014 11:20:35 %S A116025 7,9,14,15,17,18,19,20,22,32,39,43,45,46,47,49,50,51,59,61,62,68,70, %T A116025 71,72,79,81,86,91,93,95,101,104,107,109,110,115,116,117,118,121,123, %U A116025 129,130,142,149,151,158,160,163,164,165,167,177,185,187,197,201,207 %N A116025 sigma(n) plus n gives a semiprime (A001358). %H A116025 Harvey P. Dale, <a href="/A116025/b116025.txt">Table of n, a(n) for n = 1..1000</a> %e A116025 sigma(101)+101=203=7*29. %t A116025 Select[Range[300],PrimeOmega[DivisorSigma[1,#]+#]==2&] (* _Harvey P. Dale_, May 21 2014 *) %Y A116025 Cf. A001358, A116014. %K A116025 nonn %O A116025 1,1 %A A116025 _Giovanni Resta_, Feb 13 2006