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Search: id:A086328
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| A086328 |
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Number of n X n circulant singular (0,1) matrices over the reals. |
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+0
1
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| 1, 2, 2, 8, 2, 28, 2, 96, 62, 284, 2, 1504, 2
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OFFSET
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1,2
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FORMULA
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a(n) = 2^n - A086323(n) . For a prime p, a(p) = 2 and the two circulants are those with all rows equal (0, 0, 0, ..., 0) or all rows equal (1, 1, 1, ..., 1).
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CROSSREFS
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Cf. A086323, A086324.
Sequence in context: A092694 A098984 A088560 this_sequence A095997 A056189 A121860
Adjacent sequences: A086325 A086326 A086327 this_sequence A086329 A086330 A086331
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KEYWORD
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nonn
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AUTHOR
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Yuval Dekel (dekelyuval(AT)hotmail.com), Aug 30 2003
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