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 A092733 #11 Jun 21 2021 18:33:58 %S A092733 5,8,22,274,65794 %N A092733 Sum of two consecutive primes of the form 2^x+1 (including Fermat primes and 2). %e A092733 a(1) = [2^0+1] + [2^(2^0)+1] %e A092733 a(2) = [2^(2^0)+1] + [2^(2^1)+1] %e A092733 a(3) = [2^(2^1)+1] + [2^(2^2)+1] %e A092733 a(4) = [2^(2^2)+1] + [2^(2^3)+1] %e A092733 a(5) = [2^(2^3)+1] + [2^(2^4)+1] %t A092733 Total/@Partition[Select[2^Range[0,50]+1,PrimeQ],2,1] (* _Harvey P. Dale_, Jun 21 2021 *) %Y A092733 Cf. A092506, A019434, A063897. %K A092733 nonn,more %O A092733 1,1 %A A092733 _Jorge Coveiro_, Apr 12 2004 %E A092733 Offset corrected by _Arkadiusz Wesolowski_, Oct 22 2011