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A022240 Gaussian binomial coefficients [ n,11 ] for q = 7. 1
1, 2306881200, 4656488262337620150, 9234320988196680367732171600, 18266877872505055585959373506477770853, 36121735336208679823466411064327588635221204800, 71425080387019299237581315602206452684576535149974900600 (list; graph; refs; listen; history; text; internal format)
OFFSET

11,2

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 = 11..111

FORMULA

a(n) = Product_{i=1..11} (7^(n-i+1)-1)/(7^i-1), by definition. - Vincenzo Librandi, Aug 05 2016

MATHEMATICA

Table[QBinomial[n, 11, 7], {n, 11, 20}] (* Vincenzo Librandi, Aug 05 2016 *)

PROG

(Sage) [gaussian_binomial(n, 11, 7) for n in xrange(11, 18)] # Zerinvary Lajos, May 28 2009

(MAGMA) r:=11; q:=7; [&*[(1-q^(n-i+1))/(1-q^i): i in [1..r]]: n in [r..20]]; // Vincenzo Librandi, Aug 05 2016

CROSSREFS

Sequence in context: A224988 A180688 A225760 * A251490 A277720 A090875

Adjacent sequences:  A022237 A022238 A022239 * A022241 A022242 A022243

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

Offset changed by Vincenzo Librandi, Aug 05 2016

STATUS

approved

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Last modified March 26 10:18 EDT 2019. Contains 321491 sequences. (Running on oeis4.)