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 A211003 #14 Oct 02 2013 15:58:41 %S A211003 3,31,43,47,151,179,251,347,359,367,6571,6599,6607,6619,6659,6679 %N A211003 Primes congruent to 3 in the structure (or curve) of A211000. %C A211003 The behavior seems to be as modular arithmetic but in a growing structure. For n >= 13 the structure is essentially a column of tangent circles of radius 1. %Y A211003 Primes in A211002. %Y A211003 Cf. A211000, A211001, A211010, A211011, A211020-211023. %K A211003 nonn,more %O A211003 1,1 %A A211003 _Omar E. Pol_, Mar 30 2012