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A060721
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Singular n X n matrices over GF(7).
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2
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OFFSET
| 1,2
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LINKS
| Harry J. Smith, Table of n, a(n) for n=1,...,34
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FORMULA
| For n >= 1 a(n) = 7^(n^2) - A053293(n) = 7^(n^2) - (7^n - 1)(7^n - 7)...(7^n - 7^(n-1))
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MAPLE
| for n from 1 to 15 do printf(`%d, `, 7^(n^2) - product(7^n-7^j, j=0..n-1)) od:
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PROG
| (PARI) { for (n=1, 34, write("b060721.txt", n, " ", 7^(n^2) - prod(j=0, n - 1, 7^n - 7^j)); ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 10 2009]
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CROSSREFS
| A053293.
Sequence in context: A204712 A063390 A130612 * A116316 A116329 A038659
Adjacent sequences: A060718 A060719 A060720 * A060722 A060723 A060724
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KEYWORD
| nonn
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AUTHOR
| Avi Peretz (njk(AT)netvision.net.il), Apr 21 2001
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EXTENSIONS
| More terms from James A. Sellers (sellersj(AT)math.psu.edu), Apr 24 2001
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