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 A064974 #11 Jun 19 2018 03:28:03
%S A064974 14,20,110,200,830,1490,1880,2090,3260,3470,5660,9440,13010,15650,
%T A064974 15740,16070,18050,18920,19430,21020,22280,25310,31730,34850,43790,
%U A064974 51350,55340,62990,67220,69500,72230,77270,79700,81050,82730,88820
%N A064974 Numbers k such that k-1, k-3, k-7 and k-9 are all prime.
%H A064974 Harry J. Smith, <a href="/A064974/b064974.txt">Table of n, a(n) for n = 1..1000</a>
%t A064974 Select[Range[10^5], PrimeQ[ # - 1] && PrimeQ[ # - 3] && PrimeQ[ # - 7] && PrimeQ[ # - 9] &]
%o A064974 (PARI) { n=0; for (m=1, 10^9, if(isprime(m - 1) && isprime(m - 3) && isprime(m - 7) && isprime(m - 9), write("b064974.txt", n++, " ", m); if (n==1000, return)) ) } \\ _Harry J. Smith_, Oct 02 2009
%Y A064974 Cf. A090258.
%K A064974 easy,nonn
%O A064974 1,1
%A A064974 _Robert G. Wilson v_, Oct 30 2001