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 A050773 #9 Aug 18 2021 23:45:51 %S A050773 4,22,54,93,111,145,155,185,221,231,377,450,667,688,992,1122,1161, %T A050773 1428,1638,1995,2144,2220,2624,2820,2838,3627,3774,3876,4225,4761, %U A050773 5106,5434,5590,5676,5850,6188,6216,6405,6734,8364,8554,9196,9471,9558,10660 %N A050773 Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 6 skipped primes. %e A050773 a(2)=22 + (2+11) = 35 + (5+7) = ending prime 47. Between 22 and 47 one finds 6 primes 23, 29, 31, 37, 41 and 43. %Y A050773 Cf. A050703, A050710. %K A050773 nonn %O A050773 1,1 %A A050773 _Patrick De Geest_, Sep 15 1999 %E A050773 Offset corrected by _Sean A. Irvine_, Aug 18 2021