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 A022257 Gaussian binomial coefficients [ n,6 ] for q = 9. 1
 1, 597871, 321704819164, 171201975319325044, 90997618413507253345810, 48360684318187059842589436510, 25700898795425967456865415317747420, 13658514212390616911370927114097728660820, 7258694620170400715835032365617891585605600635 (list; graph; refs; listen; history; text; internal format)
 OFFSET 6,2 REFERENCES F. J. MacWilliams and N. J. A. Sloane, The Theory of Error-Correcting Codes, Elsevier-North Holland, 1978, p. 698. LINKS Vincenzo Librandi, Table of n, a(n) for n = 6..180 FORMULA a(n) = Product_{i=1..6} (9^(n-i+1)-1)/(9^i-1), by definition. - Vincenzo Librandi, Aug 04 2016 MATHEMATICA Table[QBinomial[n, 6, 9], {n, 6, 20}] (* Vincenzo Librandi, Aug 04 2016 *) PROG (Sage) [gaussian_binomial(n, 6, 9) for n in range(6, 15)] # Zerinvary Lajos, May 27 2009 (Magma) r:=6; q:=9; [&*[(1-q^(n-i+1))/(1-q^i): i in [1..r]]: n in [r..20]]; // Vincenzo Librandi, Aug 04 2016 CROSSREFS Sequence in context: A151435 A143910 A206598 * A237536 A209515 A106779 Adjacent sequences: A022254 A022255 A022256 * A022258 A022259 A022260 KEYWORD nonn AUTHOR N. J. A. Sloane. EXTENSIONS Offset changed by Vincenzo Librandi, Aug 04 2016 STATUS approved

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Last modified February 29 10:50 EST 2024. Contains 370425 sequences. (Running on oeis4.)