| 1, 7, 11, 15, 17, 19, 21, 23, 27, 29, 39, 41, 47, 49, 55, 57, 73, 75, 83, 93, 95, 101, 103, 107, 109, 113, 115, 117, 119, 123, 125, 127, 131, 137, 139, 143, 155, 161, 163, 165, 169, 171, 177, 183, 185, 191, 199, 203, 207, 211, 213, 217, 221, 225, 237, 241, 243, 255, 257, 259
(list; graph; listen)
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OFFSET
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1,2
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PROGRAM
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(PARI) forstep(m=1, 10^6, 2, n=sqrtint(2^m-1); if(2^m-1-n^2<n, print1(m, ", ")))
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CROSSREFS
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Cf. A000225, A017910, A144932
Sequence in context: A080837 A120687 A053217 this_sequence A166257 A130569 A078176
Adjacent sequences: A144928 A144929 A144930 this_sequence A144932 A144933 A144934
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KEYWORD
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nonn
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AUTHOR
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Reikku Kulon (reikku(AT)gmail.com), Sep 25 2008
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EXTENSIONS
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Edited and extended by Max Alekseyev (maxale(AT)gmail.com), Oct 12 2009
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