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 A379454 #7 Dec 23 2024 09:51:29 %S A379454 727974361,2204693643,2643690625 %N A379454 Numbers that decrease three times in succession when they are iteratively replaced by the "Look and Say" description (cf. A045918) of their prime factors, counted with multiplicity. %e A379454 2643690625 is a term as 2643690625 = 5^5 * 845981 which becomes 551845981 when replaced by the "Look and Say" description of its prime factors, and 551845981 is smaller than 2643690625, 551845981 = 239^2 * 9661 which becomes 223919661 when replaced by the "Look and Say" description of its prime factors, and 223919661 is smaller than 551845981, and 223919661 = 3 * 7^5 * 4441 which becomes 135714441 when replaced by the "Look and Say" description of its prime factors, and 135714441 is smaller than 223919661. %Y A379454 Cf. A045918, A379453, A379455, A005150, A367974, A369132, A369092. %K A379454 nonn,more,bref,base %O A379454 1,1 %A A379454 _Scott R. Shannon_, Dec 23 2024