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Search: id:A074019
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| A074019 |
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Number of elements of GF(7^n) with trace 1 and subtrace 2. |
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10
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OFFSET
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1,3
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COMMENT
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Same as the number of elements of GF(7^n) with trace 2 and subtrace 1. Same as the number of elements of GF(7^n) with trace 3 and subtrace 4. Same as the number of elements of GF(7^n) with trace 4 and subtrace 4. Same as the number of elements of GF(7^n) with trace 5 and subtrace 1. Same as the number of elements of GF(7^n) with trace 6 and subtrace 2.
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LINKS
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F. Ruskey, Number of Elements of GF(7^n) with given trace and subtrace
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EXAMPLE
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a(2;3,4)=1. Let GF(7^2) be defined by the field extension GF(7)[x]/( 3+5b+b^2 ). The one element of GF(7^2) with trace 3 and subtrace 4 is { 5 }.
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CROSSREFS
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Cf. A074014, A074015, A074016, A074017, A074018, A074020, A074021, A074022, A074023.
Sequence in context: A053127 A068495 A097126 this_sequence A074018 A074016 A093142
Adjacent sequences: A074016 A074017 A074018 this_sequence A074020 A074021 A074022
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KEYWORD
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easy,nonn
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AUTHOR
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Frank Ruskey, Nate Kube (fruskey(AT)cs.uvic.ca), Aug 19 2002
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