login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A006104 Gaussian binomial coefficient [ n,n/2 ] for q=3.
(Formerly M3472)
1
1, 1, 4, 13, 130, 1210, 33880, 925771, 75913222, 6174066262, 1506472167928, 366573514642546, 267598665689058580, 195168545232713290660, 427028776969176679964080, 934054234760012359481199283, 6129263888495201102915629695046 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
REFERENCES
J. Goldman and G.-C. Rota, The number of subspaces of a vector space, pp. 75-83 of W. T. Tutte, editor, Recent Progress in Combinatorics. Academic Press, NY, 1969.
I. P. Goulden and D. M. Jackson, Combinatorial Enumeration. Wiley, NY, 1983, p. 99.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
M. Sved, Gaussians and binomials, Ars. Combinatoria, 17A (1984), 325-351.
LINKS
M. Sved, Gaussians and binomials, Ars. Combinatoria, 17A (1984), 325-351. (Annotated scanned copy)
MATHEMATICA
Table[QBinomial[n, Floor[n/2], 3], {n, 0, 20}] (* Harvey P. Dale, Nov 11 2011 *)
CROSSREFS
Sequence in context: A121813 A197897 A203380 * A067634 A203215 A198159
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Harvey P. Dale, Nov 11 2011
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 22 15:13 EST 2024. Contains 370256 sequences. (Running on oeis4.)