Search: id:A066872
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%I A066872
%S A066872 5,10,26,50,122,170,290,362,530,842,962,1370,1682,1850,2210,2810,3482,
%T A066872 3722,4490,5042,5330,6242,6890,7922,9410,10202,10610,11450,11882,12770,
%U A066872 16130,17162,18770,19322,22202,22802,24650,26570,27890,29930,32042
%N A066872 p^2 + 1 as p runs through the primes.
%t A066872 lst={};Do[AppendTo[lst,DivisorSigma[2,Prime[n]]],{n,5!}];lst...and/or... 
               lst={};Do[AppendTo[lst,Prime[n]^2+1],{n,5!}];lst [From Vladimir Orlovsky 
               (4vladimir(AT)gmail.com), Mar 11 2009]
%Y A066872 Sequence in context: A038252 A083010 A166388 this_sequence A063478 A025486 
               A128665
%Y A066872 Adjacent sequences: A066869 A066870 A066871 this_sequence A066873 A066874 
               A066875
%K A066872 easy,nonn
%O A066872 1,1
%A A066872 Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Jan 21 2002

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