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 A104152 #10 Jan 26 2020 11:01:19 %S A104152 50,150,170,180,240,270,290,320,410,450,500,530,570,590,600,720,740, %T A104152 800,810,830,860,920,930,1020,1070,1140,1200,1230,1340,1350,1370,1380, %U A104152 1460,1490,1500,1520,1530,1580,1670,1710,1740,1800,1850,1950,1970,2060,2150,2180,2210,2250,2280,2300 %N A104152 Numbers n such that n77 is prime and n is a multiple of ten. %H A104152 Daniel Starodubtsev, <a href="/A104152/b104152.txt">Table of n, a(n) for n = 1..10000</a> %t A104152 Select[10*Range[250],PrimeQ[100#+77]&] (* _Harvey P. Dale_, Feb 28 2015 *) %Y A104152 Cf. A102611. %K A104152 base,nonn %O A104152 1,1 %A A104152 _Parthasarathy Nambi_, Mar 08 2005