login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A014116 Order of automorphism group of Barnes-Wall lattice in dimension 2^n. 3
2, 8, 1152, 696729600, 89181388800, 48126558103142400, 409825748158189771161600, 55428899652335313894424707072000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

REFERENCES

J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 129.

G. E. Wall, On the Clifford collineation..., Nagoya Math. J., 21 (1962), pp. 199-222.

LINKS

Table of n, a(n) for n=0..7.

A. R. Calderbank, E. M. Rains, P. W. Shor and N. J. A. Sloane, Quantum error correction via codes over GF(4), IEEE Trans. Inform. Theory, 44 (1998), 1369-1387.

Index entries for sequences related to Barnes-Wall lattices

MAPLE

2^(n^2+n+1) * (2^n - 1) * product('2^(2*i)-1', 'i'=1..n-1); # except for n=3.

CROSSREFS

Agrees with A014115 except at n=3. Equals half of A001309. Cf. A003956.

Sequence in context: A103085 A084148 A014115 * A121015 A216619 A306241

Adjacent sequences:  A014113 A014114 A014115 * A014117 A014118 A014119

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 16 04:54 EDT 2019. Contains 324145 sequences. (Running on oeis4.)