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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 72.
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%I #12 Aug 18 2021 00:10:32

%S 33149,64058,65074,106357,221069,222953,292906,293989,299434,376058,

%T 378514,380978,382213,470957,473705,578041,692753,694418,697754,

%U 701098,702773,812426,817841,821461,823274,825089,826906,832369,965053,1094957

%N 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 72.

%K nonn

%O 1,1

%A _David W. Wilson_

%E First term 5185 removed by _Georg Fischer_, Jun 16 2019