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Search: id:A122743
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| A122743 |
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Number of normalized polynomials of degree n in GF(2)[x,y]. |
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+0
2
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| 1, 6, 56, 960, 31744, 2064384, 266338304, 68451041280, 35115652612096, 35993612646875136, 73750947497819242496
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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Arnaud Bodin, Number of irreducible polynomials in several variables over finite fields, http://arxiv.org/abs/0706.0157, Amer. Math. Monthly, 115 (2008), 653-660.
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FORMULA
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a(n) = 2^((n+1)(n+2)/2) - 2^(n(n+1)/2) (conjecture). [From Paul D. Hanna (pauldhanna(AT)juno.com), Apr 08 2009]
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CROSSREFS
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Cf. A115457.
Sequence in context: A112699 A093197 A052317 this_sequence A137032 A053421 A083696
Adjacent sequences: A122740 A122741 A122742 this_sequence A122744 A122745 A122746
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KEYWORD
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nonn,more
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Aug 13 2008
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