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 A031622 #15 Aug 18 2021 00:10:32 %S A031622 2713,7421,14449,24106,24730,49453,65761,68869,84389,86138,87314, %T A031622 88498,105337,106637,131485,154193,156554,162133,182101,183809,184666, %U A031622 187249,190721,191594,212329,244877,250841,254857,256877,282922,285050 %N A031622 Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 34. %Y A031622 Subsequence of A003814. %K A031622 nonn %O A031622 1,1 %A A031622 _David W. Wilson_ %E A031622 First term 1157 removed by _Georg Fischer_, Jun 16 2019