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 A302443 #17 Apr 15 2018 13:33:24
%S A302443 3,19,119,849,6663,54514,460019,3982973,35174007
%N A302443 Number of primes of the form b^2-3 for b <= 10^n.
%e A302443 a(1) = 3 because there are 3 primes of the form b^2-3 for b <= 10 : 13, 61 and 97.
%o A302443 (PARI) {a(n) = sum(k=0, 10^n, isprime(k^2-3))}
%Y A302443 Number of primes of the form b^2+m for b <= 10^n: this sequence (m=-3), A302442 (m=-2), A206709 (m=1), A302434 (m=2), A302435 (m=3).
%Y A302443 Cf. A028874.
%K A302443 nonn,more
%O A302443 1,1
%A A302443 _Seiichi Manyama_, Apr 08 2018