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 A048281 #17 Jul 21 2014 04:29:49 %S A048281 0,0,4,0,3,12,15,4,0,4,7,9,39,13,0,9,25,12,21,0,69,18,25,87,93,19,13, %T A048281 9,25,49,68,58,14,34,4,16,9,53,61,33,12,11,0,189,59,61,78,28,73,42,28, %U A048281 0,235,63,57,31,51,77,83,31,89,53,99,0,309,36,120,333,323,121,164,44,207,36,19,200,62,33 %N A048281 Beginning of first run of consecutive quadratic residues mod prime(n) of longest length. %e A048281 The numbers 0, 1, 4, 5, 6, 9, 10, 11, 14, . . . are the squares mod 5, and 5 = prime(3), so a(3) = 4. - _Jonathan Sondow_, Jul 20 2014 %Y A048281 Cf. A048280. %K A048281 nonn %O A048281 1,3 %A A048281 _David W. Wilson_ %E A048281 Offset corrected to 1, definition clarified, _Jonathan Sondow_ Jul 20 2014