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 A325886 #4 May 26 2019 15:01:24 %S A325886 13834,73837,151325,172324,182973,213615,233009,275786,283877,296449 %N A325886 Bases b where exactly ten primes p with p < b exist such that p is a base-b Wieferich prime. %C A325886 Numbers n such that A255920(n) = 10. %o A325886 (PARI) is(n) = my(i=0); forprime(p=1, n-1, if(Mod(n, p^2)^(p-1)==1, i++)); i==10 %Y A325886 Cf. A255920. %Y A325886 Cf. bases b with exactly k base-b Wieferich primes less than b: A255921 (k=0), A255922 (k=1), A255923 (k=2), A255924 (k=3), A255925 (k=4), A325881 (k=5), A325882 (k=6), A325883 (k=7), A325884 (k=8), A325885 (k=9). %K A325886 nonn,more %O A325886 1,1 %A A325886 _Felix Fröhlich_, May 26 2019