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A074032
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Number of degree-n irreducible polynomials over GF(4) with trace 0 and subtrace 1.
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4
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0, 0, 1, 4, 12, 40, 144, 512, 1813, 6528, 23808, 87380, 322560, 1198080, 4473647, 16777216
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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COMMENTS
| Let a = RootOf( x^2+x+1 ) and b = 1+a. Same as number of degree-n irreducible polynomials over GF(4) with trace 0 and subtrace a. Same as number of degree-n irreducible polynomials over GF(4) with trace 0 and subtrace b.
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LINKS
| F. Ruskey, Number of irreducible polynomials over GF(4) with given trace and subtrace
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CROSSREFS
| Cf. A074031, A074033, A074034, A074035.
Sequence in context: A149332 A149333 A074450 * A028403 A149334 A149335
Adjacent sequences: A074029 A074030 A074031 * A074033 A074034 A074035
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KEYWORD
| nice,more,nonn
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AUTHOR
| Frank Ruskey, Nate Kube (ruskey(AT)cs.uvic.ca), Aug 26 2002
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EXTENSIONS
| More terms from Ruskey's website - Joerg Arndt, Jan 16 2011
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