A000820 Number of switching networks under action of AG_n(Z_2). (Formerly M4698 N2007)

10, 35, 271, 29821, 58561146596, 263752834000960467258171320, 5521060336920386371390128802363265964201729623531400218908632

Offset

1,1

Comments

See Harrison reference for precise definition.

Next term has 133 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..7.

Index entries for sequences related to switching networks

Crossrefs

Sequence in context: A126995 A271732 A219295 * A126249 A125550 A343155

Adjacent sequences: A000817 A000818 A000819 * A000821 A000822 A000823

Keyword

nonn

Author

N. J. A. Sloane

Extensions

More terms from Sean A. Irvine, Jan 19 2012

Status

approved