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Search: id:A115491
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| A115491 |
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Number of monic irreducible polynomials of degree 5 in GF(2^n)[x]. |
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+0
1
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| 6, 204, 6552, 209712, 6710880, 214748352, 6871947648, 219902325504, 7036874417664, 225179981368320, 7205759403792384, 230584300921368576, 7378697629483819008, 236118324143482257408, 7555786372591432335360
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OFFSET
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1,1
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FORMULA
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a(0)=0, a(1)=6, a(n)=34a(n-1)-64a(n-2) - T. D. Noe (noe(AT)sspectra.com), Nov 30 2006
a(n)=-(2/5)*2^n+(32/5)*32^n, with n>=0 - Paolo P. Lava (ppl(AT)spl.at), Jun 17 2008
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CROSSREFS
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Sequence in context: A112845 A109058 A003743 this_sequence A082405 A054653 A061540
Adjacent sequences: A115488 A115489 A115490 this_sequence A115492 A115493 A115494
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KEYWORD
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nonn
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AUTHOR
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Max Alekseyev (maxal(AT)cs.ucsd.edu)
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