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 A099727 #12 Sep 21 2024 17:04:17 %S A099727 113127131137139149,569571577587593599,727733739743751757, %T A099727 733739743751757761,739743751757761769,102110311033103910491051, %U A099727 105110611063106910871091,110911171123112911511153,118111871193120112131217,138113991409142314271429 %N A099727 Concatenations of six consecutive primes forming a prime. %H A099727 K. D. Bajpai, <a href="/A099727/b099727.txt">Table of n, a(n) for n = 1..1470</a> %e A099727 The prime 113127131137139149 is a concatenation of the consecutive primes 113, 127, 131, 137, 139 and 149. %p A099727 select(isprime, [seq(parse(cat([seq(ithprime(i), i=n+0..n+5)][])), n=1..500)])[]; # _K. D. Bajpai_, Mar 24 2014 %t A099727 Select[FromDigits[Flatten[IntegerDigits/@#]]&/@Partition[Prime[Range[ 300]],6,1],PrimeQ] (* _Harvey P. Dale_, Apr 30 2020 *) %Y A099727 Cf. A030461, A030469, A030473, A086040, A086041. %K A099727 nonn,base %O A099727 1,1 %A A099727 _Ray G. Opao_, Nov 07 2004