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 A113617 #11 Jul 01 2024 02:41:31 %S A113617 2,5,17,8893,868151,3875933,219554912086470964379, %T A113617 63036368490471985096643,26151660747268050131008657684404431 %N A113617 Primes in the sums of the first 2^n primes or primes in A099825. %C A113617 The programs in the link require the construction of a wall to wall binary file containing the first 10.6 * 10^9 primes. %H A113617 Cino Hilliard, <a href="http://groups.msn.com/First300billionprimes/sumprimeslt2n.msnw">Sum first 2^n Primes</a>. [Link corrected by Alexey Beshenov, Jan 25 2009] [broken link] %F A113617 a(n) = A099825(A121248(n)). - _Amiram Eldar_, Jul 01 2024 %e A113617 Sum of first 2^32 primes = 219554912086470964379 which is prime. %Y A113617 Cf. A099825, A121248. %K A113617 nonn,hard,more %O A113617 1,1 %A A113617 _Cino Hilliard_, Jan 14 2006 %E A113617 Offset corrected and a(8)-a(9) added by _Amiram Eldar_, Jul 01 2024