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 A174862 #13 Dec 11 2019 17:03:23 %S A174862 907,977,977,36643,1067749,17777197,71622461,2389799983,31252968359, %T A174862 49460594569,1915014433303,4076200167673 %N A174862 Smallest prime p such that the sum of the squares of primes up to p is a multiple of 10^n. %C A174862 Sequence discovery attributed to davar55. Initial work performed by _Charles R Greathouse IV_. Sequence extension performed and custom software written by _Benjamin R. Buhrow_. %H A174862 Mersenneforum, <a href="http://www.mersenneforum.org/showthread.php?t=13181">Sums of Squares</a> puzzle, Mar 18 2010. %H A174862 Ben Buhrow, <a href="http://sites.google.com/site/bbuhrow/home/sums-of-prime-squares">Software and extended tables.</a> %e A174862 For a(1) = 907, 2^2 + 3^2 + 5^2 + ... + 907^2 = 37464550, which is a multiple of 10^1. %e A174862 For a(2) = 977, 2^2 + ... + 977^2 = 46403000, which is a multiple of 10^2 and 10^3. %Y A174862 Cf. A330308, A330309. %K A174862 nonn,more,hard %O A174862 1,1 %A A174862 _Benjamin R. Buhrow_, Mar 31 2010