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 A320704 #11 Sep 08 2022 08:46:23
%S A320704 46,47,91,97,114,121,139,168,197,203,214,232,239,240,242,267,278,280,
%T A320704 290,312,317,342,357,363,376,381,404,423,437,439,449,452,461,470,472,
%U A320704 489,499,511,546,550,562,565,599,600,617,633,634,647,653,657,675,680,692,698,716,728
%N A320704 Indices of primes followed by a gap (distance to next larger prime) of 12.
%C A320704 Indices of the primes given in A031930.
%H A320704 Vincenzo Librandi, <a href="/A320704/b320704.txt">Table of n, a(n) for n = 1..10150</a>
%H A320704 <a href="/index/Pri#gaps">Index entries for primes, gaps between</a>.
%F A320704 a(n) = A000720(A031930(n)).
%F A320704 A320704 = { i > 0 | prime(i+1) = prime(i) + 12 }.
%t A320704 Select[Range[1000], Prime[#] + 12 == Prime[# + 1] &] (* _Vincenzo Librandi_, Mar 21 2019 *)
%o A320704 (PARI) A320704_vec(N=100,g=12,p=2,i=primepi(p)-1,L=List())={forprime(q=1+p,,i++; if(p+g==p=q, listput(L,i); N--||break));Vec(L)} \\ returns the list of first N terms of the sequence
%o A320704 (Magma) [n: n in [1..1000] | NthPrime(n+1) - NthPrime(n) eq 12]; // _Vincenzo Librandi_, Mar 21 2019
%Y A320704 Equals A000720 o A031930.
%Y A320704 Row 6 of A174349.
%Y A320704 Indices of 12's in A001223.
%Y A320704 Cf. A029707, A029709, A320701, A320702, ..., A320720 (analog for gaps 2, 4, 6, 8, ..., 44), A116493 (gap 70), A116496 (gap 100), A116497 (gap 200), A116495 (gap 210).
%K A320704 nonn
%O A320704 1,1
%A A320704 _M. F. Hasler_, Oct 19 2018