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 A261405 #12 May 28 2022 18:23:30 %S A261405 1009,1129,1201,2689,3529,7561,7681,8089,8761,9601,13729,19009,21121, %T A261405 21961,28081,31249,33049,37489,44641,46489,48049,48889,49009,49921, %U A261405 51769,53089,53881,55441,56809,59929 %N A261405 Primes p such that the maximal length of a nontrivial N(p)-Hensley sequence mod p is less than the value of A124882 for that prime, where N(p) is the least positive quadratic non-residue mod p. %H A261405 Pablo Saez, X. Vidaux, and M. Vsemirnov, <a href="https://doi.org/10.1016/j.jnt.2014.10.008">Optimal bounds for Buchi's problem in modular arithmetic</a>, Journal of Number Theory Volume 149, April 2015, Pages 368-403. See Table 2. %Y A261405 Cf. A124882, A261404. %K A261405 nonn,more %O A261405 1,1 %A A261405 _N. J. A. Sloane_, Aug 22 2015