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 A073923 #14 Dec 28 2024 10:19:26
%S A073923 1,2,4,16,8,4096,32,16384,134217728,256,33554432,1073741824,
%T A073923 2147483648,68719476736,8192,262144,
%U A073923 2722258935367507707706996859454145691648,1152921504606846976,10889035741470030830827987437816582766592
%N A073923 a(1)=1, a(n) is the smallest power of 2 not included earlier such that Sum_{k=1..n} a(k) is prime.
%F A073923 Conjecture: a(n) = A059661(n)-A059661(n-1). - _R. J. Mathar_, May 07 2007
%Y A073923 Cf. A059661.
%K A073923 nonn
%O A073923 1,2
%A A073923 _Amarnath Murthy_, Aug 19 2002
%E A073923 More terms from _Benoit Cloitre_, Aug 27 2002
%E A073923 Name corrected by _Sean A. Irvine_, Dec 28 2024