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 A344029 #30 Aug 01 2023 15:34:20 %S A344029 72,2025,78447,5922181,84238825,1141011175 %N A344029 Numbers included in A343983 but not in A074583. %e A344029 If n is in A074583, n can be expressed as n = p^e (p>=e) using the prime p. %e A344029 On the other hand, the terms of this sequence are factorized as follows. %e A344029 72 = 2^3 * 3^2. %e A344029 2025 = 3^4 * 5^2. %e A344029 78447 = 3 * 79 * 331. %e A344029 5922181 = 71 * 239 * 349. %e A344029 84238825 = 5^2 * 11 * 17 * 37 * 487. %o A344029 (PARI) isok(n) = my(f=factor(n)); sumdiv(n, d, Mod(d, n)^d)==1 && n>1 && !(#f~==1 && f[1, 1]>=f[1, 2]); %Y A344029 Cf. A074583, A343983. %K A344029 nonn,more %O A344029 1,1 %A A344029 _Seiichi Manyama_, May 07 2021 %E A344029 a(6) from _Seiichi Manyama_, Aug 01 2023