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 A166131 #12 Feb 10 2020 18:24:36 %S A166131 1,4,9,15,20,46,39,43,52,76,64,83,118,92,166,154,128,146,173,236,228, %T A166131 190,283,215,434,240,246,395,607,377,357,536,349,492,519,444,722,430, %U A166131 635,814,598,512,541,562,700,821,633,708,893,729,738 %N A166131 a(j) = minimum value of n for each distinct increasing value of (Sum of the quadratic non-residues of prime(n) - Sum of the quadratic residues of prime(n)) / prime(n) for each j. %H A166131 Christopher Hunt Gribble, <a href="/A166131/b166131.txt">Table of n, a(n) for n = 1..1973</a>. %e A166131 The table below shows for each value of a(j) the corresponding values of prime(a(j)) and (Sum of the quadratic non-residues of prime(a(j)) - Sum of the quadratic residues of prime(a(j))) / prime(a(j)) %e A166131 . %e A166131 j a(j) prime(a(j)) (SQN-SQR)/prime(a(j)) %e A166131 -- ---- ----------- --------------------- %e A166131 1 1 2 0 %e A166131 2 4 7 1 %e A166131 3 9 23 3 %e A166131 4 15 47 5 %e A166131 5 20 71 7 %e A166131 6 46 199 9 %e A166131 7 39 167 11 %e A166131 8 43 191 13 %e A166131 9 52 239 15 %e A166131 10 76 383 17 %e A166131 11 64 311 19 %e A166131 12 83 431 21 %e A166131 13 118 647 23 %e A166131 14 92 479 25 %e A166131 15 166 983 27 %e A166131 16 154 887 29 %e A166131 17 128 719 31 %e A166131 18 146 839 33 %e A166131 19 173 1031 35 %e A166131 20 236 1487 37 %e A166131 21 228 1439 39 %e A166131 22 190 1151 41 %e A166131 23 283 1847 43 %e A166131 24 215 1319 45 %e A166131 25 434 3023 47 %e A166131 26 240 1511 49 %e A166131 27 246 1559 51 %e A166131 28 395 2711 53 %e A166131 29 607 4463 55 %e A166131 30 377 2591 57 %e A166131 31 357 2399 59 %e A166131 32 536 3863 61 %e A166131 33 349 2351 63 %e A166131 34 492 3527 65 %e A166131 35 519 3719 67 %e A166131 36 444 3119 69 %e A166131 37 722 5471 71 %e A166131 38 430 2999 73 %e A166131 39 635 4703 75 %e A166131 40 814 6263 77 %e A166131 41 598 4391 79 %e A166131 42 512 3671 81 %e A166131 43 541 3911 83 %e A166131 44 562 4079 85 %e A166131 45 700 5279 87 %e A166131 46 821 6311 89 %e A166131 47 633 4679 91 %e A166131 48 708 5351 93 %e A166131 49 893 6959 95 %e A166131 50 729 5519 97 %e A166131 51 738 5591 99 %Y A166131 Cf. A165951, A165974, A004273. %K A166131 nonn %O A166131 1,2 %A A166131 _Christopher Hunt Gribble_, Oct 07 2009 %E A166131 Sequence corrected and comments added by _Christopher Hunt Gribble_, Oct 10 2009