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 A180621 #4 Mar 30 2012 18:40:58 %S A180621 3,8,23,30,51,86,95,140,151,214,247,302,379,392,431,496,595,686,701, %T A180621 818,923,1066,1083,1134,1219,1338,1503,1522,1675,1732,1827,2022,2209, %U A180621 2342,2513 %N A180621 Partial sums of A180620. %C A180621 Squares in this partial sum begin: 2209 = 47^2. Primes in this partial sum begin: 3, 23, 151, 379, 431, 701. %e A180621 a(19) = 3 + 5 + 15 + 7 + 21 + 35 + 9 + 45 + 11 + 63 + 33 + 55 + 77 + 13 + 39 + 65 + 99 + 91 + 15 = 701. %Y A180621 Cf. A180620. %K A180621 nonn,less %O A180621 1,1 %A A180621 _Jonathan Vos Post_, Sep 12 2010