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A022221
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Gaussian binomial coefficients [ n,3 ] for q = 6.
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2
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1, 259, 57535, 12485095, 2698853335, 583026951031, 125936508182839, 27202382491194295, 5875718100153221815, 1269155234987097152695, 274137535269957102205111, 59213707780769522731688119, 12790160886494733304250601655
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OFFSET
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3,2
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LINKS
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FORMULA
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a(n) = Product_{i=1..3} (6^(n-i+1)-1)/(6^i-1), by definition. - Vincenzo Librandi, Aug 11 2016
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MATHEMATICA
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PROG
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(Sage) [gaussian_binomial(n, 3, 6) for n in range(3, 16)] # Zerinvary Lajos, May 27 2009
(Magma) r:=3; q:=6; [&*[(1-q^(n-i+1))/(1-q^i): i in [1..r]]: n in [r..20]]; // Vincenzo Librandi, Aug 11 2016
(PARI) r=3; q=6; for(n=r, 30, print1(prod(j=1, r, (1-q^(n-j+1))/(1-q^j)), ", ")) \\ G. C. Greubel, Jun 07 2018
(GAP) List([3..15], n->Product([1..3], i->(6^(n-i+1)-1)/(6^i-1))); # Muniru A Asiru, Jul 04 2018
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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