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A060704
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Singular n X n matrices over GF(2).
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2
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1, 10, 344, 45376, 23555072, 48560766976, 399099960492032, 13098680304497852416, 1718239329196060706865152, 901210462928281273073900978176, 1890350559451566075272982533664407552
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OFFSET
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1,2
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COMMENTS
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Also (apparently) number of n X n matrices over GF(2) having permanent = 0. - Hugo Pfoertner, Nov 14 2003
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LINKS
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FORMULA
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For n >= 1 a(n) = 2^(n^2) - A002884(n) = A002416(n) - A002884(n) = 2^(n^2) - Product_{i=0..n-1} (2^n - 2^i).
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MAPLE
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for n from 1 to 20 do printf(`%d, `, 2^(n^2) - product(2^n - 2^j, j=0..n-1)) od:
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PROG
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(PARI) a(n)={2^(n^2) - prod(i=0, n-1, 2^n - 2^i)} \\ 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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