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 A320713 #10 Oct 24 2018 19:17:16
%S A320713 590,650,708,757,842,890,928,985,1006,1051,1108,1556,1570,1648,1650,
%T A320713 1675,1754,1900,1919,2027,2125,2149,2321,2391,2397,2429,2631,2637,
%U A320713 2699,2781,2866,2918,2989,2993,3010,3085,3153,3207,3315,3340,3350,3373,3420,3511,3551,3580,3637,3751,3777,3948
%N A320713 Indices of primes followed by a gap (distance to next larger prime) of 30.
%C A320713 Indices of the primes listed in A124596.
%H A320713 <a href="/index/Pri#gaps">Index entries for primes, gaps between</a>.
%F A320713 a(n) = A000720(A124596(n)).
%F A320713 A320713 = { i>0 | prime(i+1) = prime(i) + 30 } = A001223^(-1)({30}).
%o A320713 (PARI) A(N=100,g=30,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 A320713 Equals A000720 o A124596.
%Y A320713 Indices of 30's in A001223.
%Y A320713 Row 15 of A174349.
%Y A320713 Subsequence of A107730 (prime(n+1) ends in same digit as prime(n)).
%Y A320713 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 A320713 nonn
%O A320713 1,1
%A A320713 _M. F. Hasler_, Oct 19 2018