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A060705
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Singular n X n matrices over GF(3).
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2
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OFFSET
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1,2
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LINKS
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FORMULA
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For n >= 1, a(n) = 3^(n^2) - A053290(n) = 3^(n^2) - (3^n - 1)*(3^n - 3)*...*(3^n - 3^(n-1)).
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MAPLE
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for n from 1 to 20 do printf(`%d, `, 3^(n^2) - product(3^n - 3^j, j=0..n-1)) od:
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PROG
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(PARI) a(n)={3^(n^2) - prod(j=0, n-1, 3^n - 3^j)} \\ Harry J. Smith, Jul 09 2009
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Ahmed Fares (ahmedfares(AT)my-deja.com), Apr 20 2001
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EXTENSIONS
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STATUS
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approved
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