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A000725 Invertible Boolean functions of n variables.
(Formerly M2181 N0873)
0
1, 2, 154, 2270394624, 571030462095782973206774552784, 3824475917061034074298122508414160251634847335755905881951011420229530501911521280 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Equivalence classes of invertible maps from {0,1}^n to {0,1}^n, under action of permutation of variables on the domain and permutation and complementation of the range. [Sean A. Irvine, Mar 16 2011]

REFERENCES

M. A. Harrison, The number of classes of invertible Boolean functions, J. ACM 10 (1963), 25-28.

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.

M. A. Harrison, The number of classes of invertible Boolean functions, J. ACM 10 (1963), 25-28. [Annotated scan of page 27 only]

Index entries for sequences related to Boolean functions

CROSSREFS

Sequence in context: A012602 A157087 A332585 * A151614 A103042 A284458

Adjacent sequences:  A000722 A000723 A000724 * A000726 A000727 A000728

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Sean A. Irvine, Mar 15 2011

a(6) corrected by Sean A. Irvine, May 29 2013

a(5) corrected by Sean A. Irvine, Jun 03 2013

STATUS

approved

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Last modified April 7 19:49 EDT 2020. Contains 333306 sequences. (Running on oeis4.)