

A031530


Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 32.


0



1026, 1046, 1054, 1058, 1062, 1074, 1094, 1126, 1142, 1154, 2307, 2361, 2382, 2388, 2409, 2433, 2451, 2469, 2481, 2487, 2517, 2526, 2532, 2553, 2559, 2577, 2589, 2598, 4100, 4124, 4132, 4140, 4148, 4156, 4196, 4204, 4236, 4244, 4252, 4268, 4276, 4292
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OFFSET

1,1


LINKS



MATHEMATICA

cf32Q[n_]:=Module[{s=Sqrt[n], cf, len}, cf=If[IntegerQ[s], {1}, ContinuedFraction[ s][[2]]]; len=Length[cf]; EvenQ[len]&&cf[[len/2]]==32]; Select[Range[5000], cf32Q] (* Harvey P. Dale, Sep 11 2022 *)


CROSSREFS



KEYWORD

nonn


AUTHOR



EXTENSIONS



STATUS

approved



