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 A104130 #21 Jan 08 2021 13:29:52 %S A104130 10,130,140,160,170,250,290,310,340,490,500,640,650,670,910,920,940, %T A104130 1040,1060,1070,1180,1190,1220,1270,1280,1330,1340,1360,1390,1460, %U A104130 1490,1600,1610,1670,1790,1910,1960,1970,1990,2000,2050,2060,2140,2170,2240,2440,2450,2480,2510,2560 %N A104130 Numbers n such that n33 is prime and n is a multiple of ten. %H A104130 Daniel Starodubtsev, <a href="/A104130/b104130.txt">Table of n, a(n) for n = 1..10000</a> %e A104130 If t=10, then t33 = 1033 (prime). %e A104130 If t=170, then t33 = 17033 (prime). %e A104130 If t=490, then t33 = 49033 (prime). %t A104130 Select[10 Range[300],PrimeQ[100#+33]&] (* _Harvey P. Dale_, Jan 08 2021 *) %o A104130 (PARI) for(k=1,230,if(isprime(1000*k+33),print1(10*k,", "))) \\ _Hugo Pfoertner_, Dec 21 2019 %Y A104130 Intersection of A008592 and A101472. %K A104130 base,nonn %O A104130 1,1 %A A104130 _Parthasarathy Nambi_, Mar 06 2005