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 A363459 #22 Jun 22 2025 06:31:14 %S A363459 2,5,9,14,21,29,38,49,62,78,95,114,137,162,189,218,249,281,318,359, %T A363459 402,449,498,551,610,671,735,802,873,946,1025,1106,1189,1278,1375, %U A363459 1476,1579,1686,1795,1908,2029,2154,2281,2409,2540,2677,2816,2965,3116,3273,3436 %N A363459 Sum of the first n prime powers A246655. %C A363459 Partial sums of A246655. %C A363459 If we consider 1 as a prime power, we get A024918. %H A363459 Amiram Eldar, <a href="/A363459/b363459.txt">Table of n, a(n) for n = 1..10000</a> %F A363459 a(n) = A024918(n+1) - 1. %e A363459 The first five terms of A246655 are 2,3,4,5,7, so a(5) = 2+3+4+5+7 = 21. %t A363459 FoldList[Plus, Select[Range[150], PrimePowerQ]] (* _Amiram Eldar_, Jun 22 2025 *) %Y A363459 Cf. A000961, A007504, A024918, A057820, A246655. %K A363459 nonn %O A363459 1,1 %A A363459 _Bartlomiej Pawlik_, Jun 03 2023