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 A076300 #26 Mar 30 2025 16:42:17 %S A076300 1,2,6,8,10,12,14,18,30,36,38,40,48,50,52,54,64,66,68,72,74,78,80,84, %T A076300 96,110,118,120,122,124,134,142,148,150,154,160,178,184,186,188,198, %U A076300 204,210,214,220,224,228,238,240,242,246,250,252,254,258,260,268,270 %N A076300 Numbers k such that prime(k) + s*k is prime, s=5. %H A076300 G. C. Greubel, <a href="/A076300/b076300.txt">Table of n, a(n) for n = 1..10000</a> %e A076300 2 is in the sequence because p(2) + 5*2 = 3 + 10 = 13 is prime. %t A076300 Select[Range[300],PrimeQ[Prime[#]+5#]&] (* _Harvey P. Dale_, Nov 27 2013 *) %o A076300 (Magma) [n: n in [0..500]| IsPrime(NthPrime(n) +5*n)]; // _Vincenzo Librandi_, Apr 06 2011 %o A076300 (PARI) select(x->isprime(x), vector(500, n, prime(n) + 5*n), 1) \\ _Michel Marcus_, Jan 15 2015 %o A076300 (PARI) isok(n) = isprime(prime(n) + 5*n); \\ _Michel Marcus_, May 05 2018 %Y A076300 Cf. A064402 (s=1), A076297 (s=2), A076298 (s=3), A076299 (s=4). %K A076300 nonn %O A076300 1,2 %A A076300 _Zak Seidov_, Oct 05 2002