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 A050774 #9 Aug 18 2021 23:46:03 %S A050774 39,40,58,78,205,272,330,341,357,437,475,476,520,533,551,616,738,833, %T A050774 1105,1184,1274,1984,2262,2312,2652,2964,3008,3010,3198,3444,3776, %U A050774 4386,5530,5831,6020,6204,6360,6768,7056,7380,7420,7930,8322,8835,8844,8991 %N A050774 Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 7 skipped primes. %e A050774 a(1)=39 + (3+13) = 55 + (5+11) = ending prime 71. Between 39 and 71 one finds 7 primes 41, 43, 47, 53, 59, 61 and 67. %Y A050774 Cf. A050703, A050710. %K A050774 nonn %O A050774 1,1 %A A050774 _Patrick De Geest_, Sep 15 1999 %E A050774 Offset corrected by _Sean A. Irvine_, Aug 18 2021