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 A101771 #3 Mar 30 2012 17:29:20 %S A101771 1,2,3,4,6,7,8,9,10,11,12,13,16,17,18,19,20,21,24,25,26,27,30,31,32, %T A101771 33,36,37,38,39,42,43,44,45,48,49,50,51,54,55,56,59,60,61,62,65,66,67, %U A101771 70,71,72,75,76,77,80,81,82,83,86,87,88,91,92,93,96,97,98,101,102,103,106 %N A101771 Smallest k such that k^2 is equal to the sum of n distinct primes plus 1. %F A101771 a(n) = Sqrt(A100498(n)). %Y A101771 Cf. A100498, A101772-A101775. %K A101771 nonn %O A101771 0,2 %A A101771 _Ray Chandler_, Jan 10 2005