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 A090348 #5 Aug 19 2015 13:27:25 %S A090348 2,7,9,11,23,25,29,37,43,53,67,71,79,107,109,113,127,137,149,151,163, %T A090348 169,179,191,193,197,211,233,239,263,277,281,289,317,331,337,347,359, %U A090348 361,373,379,389,401,421,431,443,449,457,463,487,491,499 %N A090348 Norms of prime elements in the ring of integers of Q(sqrt(-7)). %C A090348 Consists of those primes in A045373 together with the squares of those primes not in A045373. %D A090348 A. Frohlich and M. J. Taylor, Algebraic number theory, Cambridge studies in advanced mathematics, no. 27, Cambridge University Press, 1991. %Y A090348 Cf. A045373, A002652. %K A090348 easy,nonn %O A090348 0,1 %A A090348 _Paul Boddington_, Jan 29 2004