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 A050770 #5 Oct 17 2019 22:44:13 %S A050770 26,33,35,55,208,297,300,351,352,420,432,441,486,660,735,910,1000, %T A050770 1140,1225,1452,1584,1715,1938,2016,2250,2548,2816,3003,3724,4056, %U A050770 4180,4455,4459,4600,4736,4845,5280,5625,5746,5888,5915,6422,6475,6864,6916,6930 %N A050770 Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 3 skipped primes. %e A050770 a(2)=33 + (3+11) = ending prime 47. Between 33 and 47 one finds 3 primes 37, 41 and 43. %Y A050770 Cf. A050703, A050710. %K A050770 nonn %O A050770 0,1 %A A050770 _Patrick De Geest_, Sep 15 1999