login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A000821 Number of switching networks under action of AG_n(Z_2).
(Formerly M5253 N2285)
0
36, 330, 22060, 920737780, 247617673784972437216, 4865376593267541575898325655326600134256578720 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

See Harrison reference for precise definition.

Next term has 100 digits. [Sean A. Irvine, Jan 20, 2012]

REFERENCES

M. A. Harrison, On the number of classes of switching networks, J. Franklin Instit., 276 (1963), 313-327.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=1..6.

Index entries for sequences related to switching networks

CROSSREFS

Sequence in context: A068075 A219004 A053136 * A250422 A223307 A244795

Adjacent sequences:  A000818 A000819 A000820 * A000822 A000823 A000824

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Sean A. Irvine, Jan 19 2012

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 12 10:29 EDT 2021. Contains 344946 sequences. (Running on oeis4.)