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 A100420 #18 Sep 06 2023 11:49:32
%S A100420 22621,103205,149125,237794,288467,321451,364921,373370,404002,851099,
%T A100420 985933,1106235,1594044,1696874,1780265,1824421,1851756,2249881,
%U A100420 3112939,3257538,3397608,3601651,3747356,4347340,4710990,4886284
%N A100420 Numbers n such that 30*n+{1,7,11,17,19,23,29} are all prime.
%C A100420 Values are 4 mod 7.
%C A100420 In each case, the 7 primes are necessarily consecutive. See the comment in A100418. - _Peter Munn_, Sep 06 2023
%t A100420 Select[Range[5000000],And@@PrimeQ[30 #+{1,7,11,17,19,23,29}]&] (* _Harvey P. Dale_, Mar 06 2011 *)
%o A100420 (Magma) [ n: n in [4..70000000 by 7] | forall{ q: q in [1, 7, 11, 17, 19, 23, 29] | IsPrime(30*n+q) } ]; // _Klaus Brockhaus_, Feb 24 2011
%Y A100420 Cf. A005776, A007775, A076205, A100418, A100419, A100421-A100423.
%K A100420 easy,nonn
%O A100420 1,1
%A A100420 Ferenc Adorjan (fadorjan(AT)freemail.hu), Nov 19 2004
%E A100420 Edited by _Don Reble_, Nov 17 2005