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A060716
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Singular n X n matrices over GF(4).
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2
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1, 76, 80704, 1333866496, 350423140532224, 1470575268235571101696, 98701955014599602193609785344, 105983992373769699116787162453121171456, 1820806479557691387021584007269972378727328251904
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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) = 4^(n^2) - A053291(n) = 4^(n^2) - (4^n - 1)*(4^n - 4)*...*(4^n - 4^(n-1)).
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MAPLE
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for n from 1 to 15 do printf(`%d, `, 4^(n^2) - product(4^n-4^j, j=0..n-1)) od:
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PROG
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(PARI) a(n)={4^(n^2) - prod(j=0, n - 1, 4^n - 4^j)} \\ Harry J. Smith, Jul 10 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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Avi Peretz (njk(AT)netvision.net.il), Apr 21 2001
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EXTENSIONS
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STATUS
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approved
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