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A022258 Gaussian binomial coefficients [ n,7 ] for q = 9. 1
1, 5380840, 26058095733124, 124806266065883690200, 597035499217287155085549610, 2855650645340126913932218722028600, 13658514212390616911370927114097728660820 (list; graph; refs; listen; history; text; internal format)
OFFSET
7,2
REFERENCES
F. J. MacWilliams and N. J. A. Sloane, The Theory of Error-Correcting Codes, Elsevier-North Holland, 1978, p. 698.
LINKS
FORMULA
a(n) = Product_{i=1..7} (9^(n-i+1)-1)/(9^i-1), by definition. - Vincenzo Librandi, Aug 03 2016
MATHEMATICA
Table[QBinomial[n, 7, 9], {n, 7, 20}] (* Vincenzo Librandi, Aug 04 2016 *)
PROG
(Sage) [gaussian_binomial(n, 7, 9) for n in range(7, 14)] # Zerinvary Lajos, May 27 2009
(Magma) r:=7; 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: A115960 A186014 A234496 * A092020 A029822 A263214
KEYWORD
nonn
AUTHOR
EXTENSIONS
Offset changed by Vincenzo Librandi, Aug 04 2016
STATUS
approved

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Last modified February 28 21:38 EST 2024. Contains 370400 sequences. (Running on oeis4.)