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 A379346 #10 Jan 03 2025 14:56:00 %S A379346 1,3,5,6,7,10,9,16,17,20,26,36,36,40,46,47,56,67,73,86,97,107 %N A379346 Number of integers of the form k^2 + 1 whose greatest prime factor is A002313(n), the n-th prime not congruent to 3 mod 4. %C A379346 See A223702 for additional information. %H A379346 Florian Luca, <a href="http://www.emis.de/journals/AMI/2004/acta2004-luca.pdf">Primitive divisors of Lucas sequences and prime factors of x^2 + 1 and x^4 + 1</a>, Acta Academiae Paedagogicae Agriensis, Sectio Mathematicae 31 (2004), pp. 19-24. %H A379346 Filip Najman, <a href="http://web.math.hr/~fnajman/smooth.pdf">Smooth values of some quadratic polynomials</a>, Glasnik Matematicki Series III 45 (2010), pp. 347-355. %Y A379346 Row lengths of A223702. %Y A379346 First differences of A285283. %Y A379346 Cf. A002313, A177979, A185389. %K A379346 nonn,more %O A379346 1,2 %A A379346 _Andrew Howroyd_, Dec 22 2024