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 A105680 #24 Sep 08 2022 08:45:17 %S A105680 0,4,10,34,40,70,106,124,136,144,150,162,166,174,186,190,202,244,280, %T A105680 300,312,360,370,372,376,384,390,412,454,456,466,472,474,504,522,540, %U A105680 544,546,550,574,586,592,606,612,624,636,654,670,682,684,690,694,696 %N A105680 Numbers k such that 1009*k + 9973 is prime. %C A105680 1009 and 9973 are the smallest and largest four-digit primes, respectively. %H A105680 Daniel Starodubtsev, <a href="/A105680/b105680.txt">Table of n, a(n) for n = 1..10000</a> %e A105680 If k=0, then 1009*k + 9973 = 9973 (prime). %e A105680 If k=144, then 1009*k + 9973 = 155269 (prime). %o A105680 (Magma) [n: n in [0..700] | IsPrime(1009*n+9973)]; // _Vincenzo Librandi_, Nov 13 2010 %o A105680 (PARI) is(n)=isprime(1009*n+9973) \\ _Charles R Greathouse IV_, Jun 06 2017 %Y A105680 Cf. A105679. %K A105680 nonn,easy %O A105680 1,2 %A A105680 _Parthasarathy Nambi_, May 06 2005