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 A201278 #19 Feb 23 2014 22:13:36 %S A201278 10,2,2,5,5,130,185,5,2,2,10,10,5,5,10,17,17,5,5,5,53,53,13,13,1490,5, %T A201278 2,2,5,1565,5 %N A201278 a(n) specifies the quadratic extension sqrt(a(n)) for A201047(n). %C A201278 Conjecture (Jasiński): The numbers in this sequence are multiplicative combinations of: primes congruent to 1 or 2 modulo 4 (A002313), Pythagorean primes (A002144), the number 2, and norms of Gaussian primes A055025. %Y A201278 Cf. A200216, A200656, A201047. %K A201278 nonn,more %O A201278 1,1 %A A201278 _Artur Jasinski_, Nov 29 2011 %E A201278 Minor edits by _N. J. A. Sloane_, Feb 23 2014