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A107766 Number of self-dual monotonic Boolean functions on n variables (where the result depends on all n variables). 1
1, 0, 1, 4, 46, 2284, 1405428, 229798671816, 423295097006496421879 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
LINKS
Hans-J. Bandelt and Jarmila Hedlíková, Median algebras, Discrete Mathematics, 45 (1983), 1-30.
FORMULA
A001206(n) = Sum_{k=1..n} binomial(n,k)*a(k).
CROSSREFS
Sequence in context: A135078 A195243 A269005 * A065777 A193485 A006422
KEYWORD
hard,nonn,more
AUTHOR
Don Knuth, Jun 11 2005
EXTENSIONS
a(7)-a(8) from Vladeta Jovovic, Jun 13 2005
a(9) (using formula) from Pontus von Brömssen, Dec 29 2023
STATUS
approved

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Last modified April 19 18:05 EDT 2024. Contains 371798 sequences. (Running on oeis4.)