Search: id:A092901
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%I A092901
%S A092901 0,0,3,64,497,3787,30870,261869
%N A092901 Number of irregular primes (A000928) less than 10^n.
%C A092901 Buhler maintains a list of regular and irregular primes. Data about each 
               irregular prime includes the index of irregularity, irregular pairs, 
               Vandiver residue and two cyclotomic residues.
%D A092901 J. Buhler, R. Crandall, R. Ernvall, T. Metsankyla and M. A. Shokrollahi, 
               Irregular Primes and Cyclotomic Invariants to 12 Million, J. Symbolic 
               Computation 31, 2001, 89-96.
%H A092901 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               IrregularPrime.html">Irregular Prime</a>
%H A092901 J. P. Buhler, <a href="ftp://ftp.reed.edu/users/jpb/">Irregular primes 
               less than 12,000,000 (FTP)</a>
%e A092901 The smallest irregular prime is 37.
%Y A092901 Cf. A000928.
%Y A092901 Sequence in context: A156904 A053857 A037108 this_sequence A105459 A099338 
               A119924
%Y A092901 Adjacent sequences: A092898 A092899 A092900 this_sequence A092902 A092903 
               A092904
%K A092901 nonn,more
%O A092901 0,3
%A A092901 Eric Weisstein (eric(AT)weisstein.com), Mar 13, 2004
%E A092901 a(6) and a(7) from T. D. Noe (noe(AT)sspectra.com), Mar 31 2004

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