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]
CROSSREFS
KEYWORD
nonn,nice,easy
AUTHOR
EXTENSIONS
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Aug 21 2010, Sep 05 2010
STATUS
approved