A000721 Number of balanced Boolean functions of n variables. (Formerly M1721 N0683)

1, 2, 6, 74, 169112, 39785643746726, 37126652766640082937217814348006, 558874591495497577231218517843968898077072559983411918227348931497772

Offset

1,2

References

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

H. Jamke, Table of n, a(n) for n = 1..10

B. Elspas, Self-complementary symmetry types of Boolean functions, IEEE Trans. Electron. Computers, 9 (1960), 264-266.

B. Elspas, Self-complementary symmetry types of Boolean functions, IEEE Transactions on Electronic Computers 2, no. EC-9 (1960): 264-266. [Annotated scanned copy]

E. M. Palmer and R. W. Robinson, Enumeration of self-dual configurations, Pacific J. Math., 110 (1984), 203-221. [From Herman Jamke (hermanjamke(AT)fastmail.fm), Aug 21 2010]

D. Zeilberger, First 7 terms of the sequence of weight-enumerators enumerating equivalence classes of Boolean functions under permutation of variable and negation . [From Herman Jamke (hermanjamke(AT)fastmail.fm), Aug 21 2010]

D. Zeilberger, First 7 terms of the sequence of weight-enumerators enumerating equivalence classes of Boolean functions under permutation of variable and negation [Local copy]

Index entries for sequences related to Boolean functions

Crossrefs

Sequence in context: A207136 A304641 A065410 * A262279 A327052 A231508

Adjacent sequences: A000718 A000719 A000720 * A000722 A000723 A000724

Keyword

nonn,nice,easy

Author

N. J. A. Sloane

Extensions

More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Aug 21 2010, Sep 05 2010

Status

approved