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 A172243 #14 Feb 12 2024 08:38:39
%S A172243 3,8,21,38,79,176,289,482,723,980,1333,1782,2359,3000,3673,4442,5371,
%T A172243 6524,7741,9150,10751,12864,15553,18306,21443,24772,28229,32710,37703,
%U A172243 44232,51529,59210,67147,76620,86221,96078,106447,117200,128593,140370
%N A172243 Partial sums of Proth primes A080076.
%H A172243 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.co/ProthPrime.html">Proth Prime</a>.
%F A172243 a(n) = Sum_{i=1..n} A080076(i).
%Y A172243 Cf. A080076.
%K A172243 easy,nonn
%O A172243 1,1
%A A172243 _Jonathan Vos Post_, Jan 29 2010
%E A172243 More terms from _R. J. Mathar_, Apr 15 2010