Search: id:A001271
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%I A001271
%S A001271 2,11,101,7,11,13,73,137,11,9091,101,9901,11,909091,17,5882353,7,11,13,
%T A001271 19,52579,101,3541,27961,11,11,23,4093,8779,73,137,99990001,11,859,
%U A001271 1058313049,29,101,281,121499449,7,11,13,211,241,9091,2161,353,449,641,
               1409,69857
%N A001271 Irregular table read by rows: row n lists of factors of 10^n +1.
%D A001271 J. Brillhart et al., Factorizations of b^n +- 1. Contemporary Mathematics, 
               Vol. 22, Amer. Math. Soc., Providence, RI, 2nd edition, 1985; and 
               later supplements.
%H A001271 J. Brillhart et al., <a href="http://www.ams.org/online_bks/conm22/">
               Factorizations of b^n +- 1</a>, Contemporary Mathematics, Vol. 22, 
               Amer. Math. Soc., Providence, RI, 3rd edition, 2002.
%H A001271 S. S. Wagstaff, Jr., <a href="http://www.cerias.purdue.edu/homes/ssw/
               cun/index.html">The Cunningham Project</a>
%e A001271 Table begins:
%e A001271 2,
%e A001271 11,
%e A001271 101,
%e A001271 7,11,13,
%e A001271 73,137,
%e A001271 11,9091,
%e A001271 101,9901,
%e A001271 11,909091,
%e A001271 17,5882353,
%e A001271 ...
%Y A001271 Sequence in context: A143135 A056732 A157715 this_sequence A038371 A003021 
               A097463
%Y A001271 Adjacent sequences: A001268 A001269 A001270 this_sequence A001272 A001273 
               A001274
%K A001271 nonn,tabf
%O A001271 0,1
%A A001271 N. J. A. Sloane (njas(AT)research.att.com).. Revised Jul 13 2009.

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