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 A066738 #3 Feb 11 2014 19:05:24 %S A066738 11,19,41,61,89,101,109,127,139,149,151,157,163,181,191,193,199,211, %T A066738 229,241,251,269,271,281,331,349,359,389,401,409,419,421,433,439,449, %U A066738 457,461,463,487,491,499,509,521,541,569,571,601,619,631,641,659,661 %N A066738 Primes that are concatenations of nonprime numbers. %e A066738 The prime 163 is the concatenation of nonprime numbers 1 and 63. 419 is the concatenation of 4, 1 and 9. %K A066738 base,easy,nonn %O A066738 1,1 %A A066738 _Joseph L. Pe_, Jan 16 2002 %E A066738 More terms from Larry Reeves (larryr(AT)acm.org), Apr 03 2002