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 A108607 #7 Oct 11 2013 12:12:34 %S A108607 40,54,56,88,90,104,136,184,198,210,248,250,294,296,328,350,376,390, %T A108607 414,424,462,488,522,536,550,570,584,664,686,714,776,798,808,824,850, %U A108607 856,858,930,950,954,1014,1048,1062,1110,1190,1208,1210,1218,1256,1274,1278 %N A108607 4-almost primes whose sum of factors is a prime. %H A108607 Charles R Greathouse IV, <a href="/A108607/b108607.txt">Table of n, a(n) for n = 1..10000</a> %e A108607 40=2*2*2*5 (4-almost prime) and 2+2+2+5=11 is a prime. %o A108607 (PARI) is(n)=my(f=factor(n));sum(i=1,#f~,f[i,2])==4 && isprime(sum(i=1,#f~,f[i,1]*f[i,2])) \\ _Charles R Greathouse IV_, Oct 11 2013 %Y A108607 Cf. A107707, A108608, A108609 (resp.) 3, 5, 6 (resp.)-almost primes whose sum of factors is a prime. %K A108607 nonn %O A108607 1,1 %A A108607 _Zak Seidov_, Jun 12 2005