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 A320711 #5 Oct 24 2018 19:16:57
%S A320711 367,446,732,1357,1440,1475,1746,1864,1912,1933,2293,2714,2888,2912,
%T A320711 3159,3204,3362,3523,3715,3786,3801,3840,3870,3920,3931,4107,4164,
%U A320711 4235,4240,4502,4643,4809,4957,4990,5110,5371,5440,5451,5581,5712,5736,5743,5870,5882,5906,5923,5933,6018,6277
%N A320711 Indices of primes followed by a gap (distance to next larger prime) of 26.
%C A320711 Indices of the primes listed in A124594.
%H A320711 <a href="/index/Pri#gaps">Index entries for primes, gaps between</a>.
%F A320711 a(n) = A000720(A124594(n)).
%F A320711 A320711 = { i > 0 | prime(i+1) = prime(i) + 26 }.
%o A320711 (PARI) A(N=100,g=26,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
%Y A320711 Equals A000720 o A124594.
%Y A320711 Row 13 of A174349.
%Y A320711 Indices of 26's in A001223.
%Y A320711 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 A320711 nonn
%O A320711 1,1
%A A320711 _M. F. Hasler_, Oct 19 2018