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 A187779 #22 Oct 28 2021 13:06:09
%S A187779 1,2,4,6,8,12,32,36,150
%N A187779 Numbers n for which the terms of A014320 up to n=A014320(k) are a permutation of {1,2,4,6,...,2*(k-1)}.
%C A187779 An old conjecture states that the equation prime(n+1)-prime(n)=2m is solvable for m=1/2,1,2,... . a(n) indicate the smallest term of A014320 such that among the previous terms there occur 1 and all previous even numbers<=a(n). The primes up to 10^8 do not generate any further terms.
%C A187779 According to Thomas R. Nicely (see Links) the next term, if it exists, must be greater than 1344 and equal to a gap occurring between primes greater than 4*10^18. - _Giovanni Resta_, Jan 06 2013
%H A187779 Thomas R. Nicely, <a href="https://faculty.lynchburg.edu/~nicely/gaps/gaplist.html">First occurrence prime gaps</a> [For local copy see A000101]
%Y A187779 Essentially equivalent to A179985.
%K A187779 nonn
%O A187779 1,2
%A A187779 _Peter J. C. Moses_, Jan 05 2013
%E A187779 Definition corrected by _Giovanni Resta_, Jan 05 2013