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 A348195 #13 Oct 07 2021 07:22:58 %S A348195 0,1,2,3,5,6,8,9,12,13,15,18,21,23,26,29,32,34,37,40,43,47,52,55,59, %T A348195 63,67,70,75,79,83,88,93,97,101,106,111,115,123,131,136,140,146,151, %U A348195 157,164,169,174,181,186,193,200,207,213,221,225,230,241,246,255,263,269,280,287,294,301,308,316,326,331,343,353,358 %N A348195 Number of primes of the form 4k+3 < n^2. %H A348195 Seiichi Manyama, <a href="/A348195/b348195.txt">Table of n, a(n) for n = 1..10000</a> %F A348195 a(n) = A066490(n^2). %o A348195 (PARI) a(n) = sum(k=2, n^2-1, isprime(k)&&k%4==3); %Y A348195 Cf. A066490, A348193, A348196. %K A348195 nonn %O A348195 1,3 %A A348195 _Seiichi Manyama_, Oct 06 2021