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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..8.

Hans-J. Bandelt and Jarmila Hedlíková, Median algebras, Discrete Mathematics, 45 (1983), 1-30.

FORMULA

A001206(n) = Sum[Binomial[n, k]a[k], {k, n}].

CROSSREFS

Cf. A001206, A107765.

Sequence in context: A135078 A195243 A269005 * A065777 A193485 A006422

Adjacent sequences:  A107763 A107764 A107765 * A107767 A107768 A107769

KEYWORD

hard,nonn

AUTHOR

Don Knuth, Jun 11 2005

EXTENSIONS

Two more terms from Vladeta Jovovic, Jun 13 2005

STATUS

approved

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Last modified March 8 10:20 EST 2021. Contains 341948 sequences. (Running on oeis4.)