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 A371083 #11 Mar 12 2024 19:02:20
%S A371083 9,18,25,45,49,50,63,75,90,98,99,117,121,125,126,147,150,153,169,171,
%T A371083 175,198,207,225,234,242,245,250,261,275,279,289,294,306,315,325,333,
%U A371083 338,342,343,350,361,363,369,375,387,414,423,425,441,450,475,477,490,495,507,522,525,529,531,539,549,550,558,575,578
%N A371083 Nonsquarefree numbers that are not divisible by p^p for any prime p.
%C A371083 The asymptotic density of this sequence is Product_{p prime} (1 - 1/p^p) - 6/Pi^2 = 0.1140631325... . - _Amiram Eldar_, Mar 12 2024
%H A371083 Antti Karttunen, <a href="/A371083/b371083.txt">Table of n, a(n) for n = 1..10000</a>
%o A371083 (PARI) \\ See A371083.
%Y A371083 Intersection of A013929 and A048103.
%Y A371083 Cf. A371084 (characteristic function), A371085 (subsequence), A059956.
%K A371083 nonn
%O A371083 1,1
%A A371083 _Antti Karttunen_, Mar 12 2024